4.67 from 639 votes

Amazing Pork Loin In The Crock Pot Every Time

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Juicy and easy, this recipe will teach you how to cook pork loin in the crock pot that is a hit with the whole family. This recipe makes a sizeable amount for dinner and is super simple to throw in your slow cooker with just a few ingredients. Prep your juicy pork loin roast and come home to dinner ready to go with this slow cooker recipe.

How To Cook Amazing Pork Loin In The Crock Pot Every Time

*This post was originally sponsored by the Ohio Pork Council, but all opinions are my own.

Sliced pork loin on a platter with two dinner plates with green beans and carrots next to the platter.


 

Delicious Pork Loin In The Crock Pot Is Perfect For Dinner

When it came to cooking a large roast such as this pork loin, most of my food memories come from when I would meet up with my Italian extended family as a kid. I remember my Great Aunt pulling out all the stops when we were there for a Sunday dinner. It didn’t happen often as they didn’t live close, but those visits sure made an impression.

I’m not sure if she made these gigantic feasts just because we were there, or if every Sunday was a giant feast, but man were they delicious. I think they always thought I was just playing, but secretly I was watching every move they made in the kitchen.

One of my favorite feasts other than pasta (Italian blood!) was when she made juicy pork loin roast in the crock pot, fresh garden green beans, and fresh bread picked up from the bakery made that day. The whole family ran to the table to dive in.

My Slow Cooker Dr. Pepper ribs are tender, fall off the bone pork ribs that have the BEST flavor. Or use my recipe of How To Make Italian Sausage In The Instant Pot for another delicious dinner idea!

What I didn’t realize when I didn’t know how to make pork loin in the crock pot, is that it is so simple you don’t have to wait until Sunday.

Pork loin prepped ahead in your slow cooker makes a great recipe to go all day so you come home to the smell of dinner almost completely done.

A pair of tongs holding up a slice of pork loin over top of a plater and plates full of more pork loin and green beans on the table in the background.

How To Make Absolutely Amazing Pork Loin In The Crock Pot

Start off by picking up a pork loin at the store or butcher. I prefer boneless for this meal as it is fast and delicious without tons of prep.

Add your cooking spray and onions to the crockpot before you add your cut of meat with the fat side up. Then coat your pork in spices, add some broth and close the lid.

When you come back you want to make sure you check your meat with a meat thermometer that it is cooked to 145 degrees, that’s when you know it is done for sure. If it finishes earlier than you expect, you can always switch your crock pot to the warm setting.

What’s The Difference Between A Pork Tenderloin And A Pork Loin

These are two different cuts of pork and both are super flavorful pieces of pork for your roast but they work a little differently. Pork loins are wide cuts of meat, large enough you can cut a full slice from it similar to a steak. Pork Loin is a sold both with and without bones.

Pork tenderloin is smaller and thinner, and when cut makes more of a medallion size, and is always boneless. Pork tenderloins generally are one to two pounds, and most pork loins in the stores are two to five pounds.

Pork Loins generally lend themselves to a slow cooker recipes or roasting for a longer period of time, while pork tenderloin can be quickly cooked over higher heat.

Have pork tenderloin? Try this tasty Instant Pot Pork Tenderloin With Honey Balsamic Sauce, and don’t skip the amazing glaze!

A crock pot with a piece of pork loin fat side up on top of sliced onions and five small bowls of spices on the counter nearby.

My Kid Is A Picky Eater, Will They Like Pork Loin In The Crock Pot

All kids are different and for some kids, it takes a while to try new foods. Pork loin in the crockpot is lean and a soft meat dish though, which lends itself to kids liking this recipe.

It easily can be sliced into bite-sized pieces, or shredded which makes it fairly easy to chew for even toddlers and preschoolers.

You can also take leftovers and shred with some bbq sauce for an easy quick sandwich for kids (or you know, the whole family!), and it’s also great with roasted potato wedges or mashed potatoes.

How To Make Pork Gravy

Make my favorite gravy recipe with the drippings!: How To Make A Simple Pork Gravy In 10 Minutes (Or Less)

How Long To Cook Pork Loin In The Crock Pot

How long you cook your pork loin roast in the crock pot can vary depending on both the size of your pork loin and the age of your crock pot. Most pork loins vary between three to five pounds, and that can affect cooking time.

A four-pound boneless pork loin is usually done in about six hours when cooked on low. To make sure your roast pork loin is cooked to perfection, use a meat thermometer. The inside of the meat should register at a temperature of 145.

You can leave your meat on the warm setting for a little while after it is finished cooking, the pan liquid will help keep it from drying out.

You should also check out the Instant Pot Pork Carnitas. They are packed with flavor, moist and delicious just like this pork loin! Add it to your dinner list for Taco Tuesday to make tacos, burritos, nachos or bowls with rice. Or if you preder pasta try the creamy sausage pasta made all in one pot.

Can I Put Frozen Pork Loin In The Crock Pot?

You can put frozen pork loin in the crock pot and it will be delicious! To cook a frozen pork loin in the crock pot first season your meat just as you would if it was fresh. Allow the frozen pork loin to cook in the slow cooker for four hours on high or eight hours on low.

Check your meat to make sure the internal temperature reaches 145 degrees. Your final cook time may vary depending on the size of your pork loin. This timing is based on a frozen five-pound pork loin.

A crock pot with a piece of pork loin sitting on sliced onion and covered with spices before cooking.

Making this recipe for the holidays? You should try the orange honey ham glaze too, it’s a crowd-pleaser!

What Size Slow Cooker Should I Use?

I’ve edited this section as I’ve received a few emails from people having varying success with different size crockpots. I recommend a 4, 5 or 6-quart crockpot. It holds the right amount of liquid to meat ratio. Crockpots cook best if they are at least 3/4 full so you may want to adjust based on your machine and how big your meat is.

If you choose to cook it in a smaller crockpot (and I really only recommend this for a pork loin closer to 3 pounds) you may have to adjust the liquid in your pot down and check your meat sooner. A smaller crockpot sometimes means it cooks quicker because it’s fuller, so check carefully.

If you choose a bigger crockpot, adding a little more liquid is a good idea. A bigger crockpot can also work well if you decide to add extra vegetables (like carrots or potatoes) to the bottom of the crockpot.

Why The Onions?

By putting a layer of onions on the bottom of the crock pot, not only do you add flavor but it helps keep the meat from sticking to the crock pot. Win-win! This helps even more if you switch your crockpot to the warm setting after it’s finished cooking.

Want to make your pork loin in the oven? This moist oven-roasted pork loin recipe is my go-to recipe!

Do You Cook A Pork Loin Fat Side Up Or Down

Most people recommend cooking a pork loin fat side up. This ensures as the fat renders, it drips down the meat and adds flavor. You can also trim the fat before cooking the meat, but it will lose some flavor.

Pork Loin tends to be a fairly lean cut of meat, I recommend trimming any fat after cooking your roast.

A piece of meat is being cooked in a slow cooker.

Do You Need To Brown A Pork Loin Before Cooking It In The Crock Pot

Browning a pork loin before cooking your recipe adds lots of flavor to your meat, and is a great way to give your finished meat more depth of flavor. For busy parents like me though, it’s not mandatory to make sure your pork loin is flavorful.

I generally skip browning a pork loin because the cut of meat is large and I’m often in a hurry, but you can absolutely brown it before you cook it in the slow cooker if you choose.

Use the pan drippings from inside the crock pot and create a delicious pork gravy in ten minutes or less for your dinner.

Can Pork Loin Be Used For Pulled Pork?

You can use pork loin for pulled pork but it will make a large amount of pulled pork if you shred all three to five pounds! I use the estimate that one pound of pork will feed three people when shredded. If I shred pork loin for pulled pork I’ll usually do this with the leftovers after eating one meal as boneless pork chops like above.

To make pulled pork from your cooked pork loin cook your meat then remove the pork and the cooking juices from the crockpot. On a cutting board using two forks, shred the meat.

Put your meat back in the crockpot. Add roughly a half cup of either pan drippings OR broth for  every cup of meat and a half cup of BBQ sauce for every pound of meat.

Allow the shredded pork to cook on high in the slow cooker on high for a minimum 30 minutes or until bubbly and juicy.

Make pulled pork and top it with my Creamy Classic Coleslaw on top, it’s super delicious together! Or try it with sweet and savory pineapple pork loin in the crockpot.

Can I Add Potatoes Or Other Vegetables To My Crock Pot Roast Pork Loin?

You can add potatoes, carrots and even celery to the bottom of the crock pot with your pork line. We like yukon potatoes or red potatoes.

When adding potatoes, or other vegetables to the bottom of the crock pot I recommend adding an additional half cup of broth to make sure there is enough liquid in your crock pot.

When you cut your vegetables I like to leave them in large chunks as they will be in the crock pot for a while. I like to cut my potatoes and carrots down to the size of about half a golf ball but pieces that are a little larger are fine too. Keep your vegetable pieces all about the same size so they cook evenly.

I recommend removing the cooked vegetables from the slow cooker first before adding BBQ sauce if you are turning part of your pork loin into pulled pork. Simply keep the vegetables covered and warm until dinner.

If you don’t want to add the vegetables straight to the slow cooker, try my quick and easy roasted baby carrots with honey glaze. This side dish is delicious with pork loin.

Do You Put Meat Or Vegetables In The Crock Pot First?

The best way to cook additional vegtables such as potatoes and carrots is to put them under your meat with the onions. When the pork cooks it will drip down.

If you put your potatoes or carrots on the sides of the pork loin, they will still be tasty and delicious. I try to avoid having the vegetables all on top of the pork loin as they don’t always cook as evenly then. You also don’t benefit from the pork dripping down on top of the vegetables which adds flavor.

What Other Sides Should I Cook With Pork Loin?

Cooking a pork loin in the crock pot couldn’t be easier, and your family will love this for dinner. We serve it up as slices of pork alongside quickly roasted vegetables or a nice green salad. Corn, roasted potato wedges or mashed potatoes, cornbread muffins or rice also work nicely as a side. Sometimes we also serve this crock pork loin recipe with homemade gravy.

I like to sometimes make a larger pork loin so we have plenty of leftovers. These can be eaten as is of course, but also can be added to rice or even stir-fry. You can also shred part of the meat and add BBQ sauce to make pulled pork with the leftovers.

For a twist on this delicious pork loin recipe, try this Pork Loin With Pineapple In The Slow Cooker! Hawaiian-inspired pork that is sweet, savory and tender. Perfect over rice or with Hawaiian rolls!

HELP My Meat Cooked Really Fast/Turned Out Dry, What Happened?

Crockpots do vary from model to model, unfortunately I can’t account for every variation in equipment. Some of the new models have a venting slit that can affect cooking time. Some of the models also just cook hotter, which I know can be super frustrating.

To avoid this, any time you cook a new recipe I recommend checking it a little early. I usually start checking around 4 hours for a large chunk of meat like this recipe.

Some crockpots also have a built-in thermometer that can help you to check the temperature which is nice because you can check without opening the crockpot. But if your crockpot doesn’t have that feature, just check your meat with a meat thermometer as quick as you can to avoid lowering the temperature in the crockpot too much.

I just made this for dinner! Yum! We’re adding this to the after-practice-meal menu. Thanks for sharing!! My six year old loved it too!

Andrea – OMKP Reader

A square view of a crock pot with a piece of pork loin sitting on sliced onion and covered with spices before cooking.
Recipe

Super Simple Boneless Pork Loin In The Crockpot Recipe


Course Main Course
Cuisine American
Prep Time 15 minutes
Cook Time 6 hours
Total Time 6 hours 15 minutes
Servings 8 People
This super simple boneless pork loin recipe goes into the crockpot and comes out juicy, moist and delicious every time. Serve this lean meat with roasted vegetables for a delicious dinner for the whole family that kids will love too.

Ingredients  

  • 3-4 Pounds boneless pork loin
  • 1 large onion I prefer sweet onion or Vidalia
  • 2 tablespoons olive oil
  • 1 teaspoon granulated garlic
  • 1 teaspoon onion powder
  • 1 teaspoon black pepper
  • 1 teaspoon salt
  • ½ teaspoon paprika
  • 2 cups broth I prefer chicken broth but any broth works.
  • cooking spray

Instructions

  • Spray the bottom and sides of your crock pot with cooking spray.
  • Slice your onion into round circle slices.
  • Lay your pork loin on top of the onions, fat side up.
  • Drizzle olive oil over the top of the pork loin.
  • Sprinkle garlic, onion powder, black pepper, salt and paprika over pork loin. Give it a quick rub to ensure that the spices are distributed evenly.
  • Add two cups of broth to the bottom of the crock pot.
  • Close and cook the pork loin in your crock pot on LOW for 6 hours or on HIGH for four hours. Your meat should register at an internal temperature of 145 with a meat thermometer. .

Video

Notes

  • I make this recipe in a four-quart crockpot that I was gifted (thanks little bro). You could make this recipe in a four, five or six-quart crockpot but see my notes in the article.
  • If this is the first time you’ve made this recipe, I recommend checking your meat at four hours regardless of the temperature as sometimes crockpot temperatures can vary which can cause some to cook faster than others. Here are some great slow cooker tips if you think your slow cooker may not be cooking correctly. You can also test your slow cooker first if you think it may run too hot.
  • Remember pork loin (different from pork tenderloin, see above for more info) is a large piece of meat that is best cooked low and slow. This helps to render the fat in the meat so it becomes tender. Not cooking the meat long enough can sometimes produce meat that “seems dry” but it actually just that the meat itself hasn’t cooked long enough to become tender. This means just because your meat hits the safe temperature, doesn’t necessarily mean it is finished cooking to become tender. Unfortunately, I can not account for every single person’s individual slow cooker and weight of meat to tell you exactly when your meat will be done. Using these tips consistently produces a delicious pork loin for most slow cookers.
  • See notes in the article of how to turn this recipe (or the leftovers) into pulled pork, and how to add extra vegetables in the crockpot when making this recipe

Nutrition

Serving: 1servings | Calories: 274kcal | Carbohydrates: 5g | Protein: 39g | Fat: 10g | Saturated Fat: 3g | Cholesterol: 107mg | Sodium: 613mg | Potassium: 696mg | Fiber: 1g | Sugar: 3g | Vitamin A: 137IU | Vitamin C: 2mg | Calcium: 19mg | Iron: 1mg
Keyword dinner, easy, meat, pork

Did You Make This?

I would love to see it! Share your thoughts with me in the comments below!

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Have a question about how to make pork loin in the crock pot recipe? Leave your questions, or just tell me how much you loved the recipe in the comments!

4.67 from 639 votes (596 ratings without comment)

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167 Comments

  1. 5 stars
    Hi, Iโ€™m making this tomorrow. Donโ€™t you lose a lot of the seasoning if you keep the seasonings on top of the fat? I want the meat flavored, not the fat! Why do u do this?
    Thanks!!

    1. Hi Priscola-

      As the meat cooks, the fat will slowly render and cook into the meat, it’s what gives the pork really great flavor when cooked low and slow. You shouldn’t have much in the way of large pieces of fat on your meat when it is finished cooking because it has cooked (also known as rendering) into the meat. The spices on top are then mixing into both the fat and the meat as it cooks.

      You are flavoring the meat with both the spices and the fat in a recipe like this where you cook low and slow. If you put the fat side down into the crockpot and only flavor the meat itself with spices, you are losing a lot of the flavor for this dish because the fat doesn’t then render into the meat. Most of the flavor would all be at the bottom of the slow cooker and not cooking into the meat itself as easily. The fat cooking into the meat also makes this pork loin tender. Hope that helps and your meal is delicious, -Kristy

  2. 5 stars
    This is delicious every single time. So easy, too.

  3. I bought 2 pork loins, one is 2.5 lbs and the other is about 2 lbs. can you put both in the crock pot at the same time and if so can one sit on top of the other ( pot is not big enough for them to sit side by side.)

    1. Hi Marjorie- I would double-check to make sure you have pork loin and not pork tenderloin. Pork tenderloin is a long and skinny piece of pork sometimes sold in two pieces in the same bag, and pork loin tends to be a wider and thicker cut. The reason I suggest double-checking is pork tenderloin is best cooked fast, such as roasting or even on the stovetop while pork loin is better cooked low and slow. If it’s a pork tenderloin, I would use a pork tenderloin recipe since it’s better cooked more quickly.

      If you are sure it’s pork loin, then yes you can absolutely stack them in the crockpot and it will be just fine. Just make sure you rub the seasoning into both pieces and put the fat side up. I have seen recently in my grocery store where they are occasionally cutting some pork loin pieces into smaller pieces than they used to. Hope that helps! -Kristy

  4. Can I use water instead of broth?

    1. Hi Courtney, Your finished pork will be less flavorful if you use water instead of broth. You also will need to add additional salt. -Kristy

  5. 5 stars
    Yummm.! I cooked on High for 4.5 hr. Probably a little too long, but I wasn’t home. I wanted slices but it fell apart pretty easy. I made garlic noodles, green beans and gravy with the broth. I then created “bowls” and layered it all! It was delicious! It is a keeper!!

  6. How do you make it pulled pork from the start. Use same recipe for pork, than add BBQ house after shredding?? HELp!

    1. Yes, follow the recipe as directed and cook the meat low and slow. Then when it’s finished cooking shred the meat with two forks, remove most of the liquid from the crockpot and add BBQ sauce to the meat. I let it sit in the crockpot for at least another 30 minutes to heat up the sauce. You can add a little bit of the cooking liquid in if needed, but only a little as too much can make it watery. This recipe will make a LOT of pulled pork though, which is why I usually suggest having some as slices of pork and some as pulled pork. Hope it’s delicious! – Kristy

  7. Hi! Question regarding the onions. We don’t do onions in this house (blah!). Can you taste them when the roast is finished? The closest I get to onions are onion flakes lol. Would it work just to put potatoes and carrots under the roast and no onions? Thanks! Looking forward to trying this recipe!

    1. Hi Joy, You can put potatoes and carrots under the roast, I’d just make sure to cook it low and slow so the meat has time to tenderize and the potatoes and carrots cook all the way through. I’d leave at least a little of the onion powder in the recipe, but you could reduce it to half a teaspoon so you won’t have as much onion flavor coming through at the end with the roast. If you’re super sensitive to onion flavor then chances are good with a full teaspoon of onion powder the finished roast may still taste a little onion-y to you. Hope that helps! -Kristy

  8. My 3 # pork loin (not a tenderloin) was overcooked (meat temp was between 150-175) at 2 1/2 hr. The crockpot setting was high, but my carrots at the bottom were barely cooked. Had to finish up the carrots on the stovetop. So be real careful with the temperature. Some crockpots run hotter than other. Recipe was very flavourable. Next time will use low heat setting, monitor meat temperature sooner, and likely not add carrots unless can start them separately sooner.

    1. Hi Sue- It does sound like your Crockpot might run a little on the hot side. 2 1/2 hours isn’t enough time for a pork loin to render properly. This cut of meat needs time to render the fat and for the meat to tenderize. If you cook this cut of meat faster at too high of a temperature, it will unfortunately dry out inside before the meat can tenderize. I hope the next one works out a little better. If you try the carrots again, I recommend cutting them a little smaller. I’ve used one-inch chunks successfully, and it’s usually my go-to size for carrots or potatoes in the crockpot so they turn out tender. Hope that helps! -Kristy

  9. 5 stars
    I make a 3-5 pork loin almost exactly like your recipe, about once a month and we love it! With leftovers, I shred part of it and make bbq sandwiches with cole slaw, and also make open face sandwiches with gravy over slices of pork on bread, mashed potatoes and a vegetable. I do add sauerkraut and onions to the pork roast in the crock pot, because my family loves it. Pork loin made in the crock pot is one of our favorites! Mashed potatoes and another vegetable is always served with the roast originally right out of the crock pot and the open face sandwiches, and French fries and cole slaw with the bbq sandwiches.

  10. Trying this recipe for Sunday dinner. Can I run on the oil and spices the day before and let it marinate overnight?

    1. Hi Margie, No reason you canโ€™t let this pork marinate overnight, but you donโ€™t have to marinate either. Hope your dinner is delicious! -Kristy

  11. Thank you for your useful commentary on the recipe, suggested side dishes, the video, and more. I am definitely subscribing to your email list.
    My 6-quart crock pot is apparently a marathon contender, as the pork loin was overcooked at 4 hours (180ยฐ ! ). It was 4 pounds, a little more than half of a huge pork loin from Sam’s Club. Your advice to check it at four hours saved the meal. My crock pot may be suitable to begin with a frozen pork loin.
    I will try this recipe again because of the convenience of quick preparation and obvious potential. The seasonings were very good, and the chicken broth and onions were the perfect base under the meat. Next time I will make the gravy recipe.

    1. I’m so glad your dinner was delicious! Sounds like your crockpot may run a little on the warm side, some of the newer ones do. I’m glad you checked the pork loin in time! Thank you for your kind words, and definitely try the gravy – it’s pretty tasty too! -Kristy

  12. Does it require broth? Does the pork not produce enough juice on its own? And if it does require broth, would water work as a substitute?

    1. Hi there, You do need the broth in this recipe to help keep the pork juicy. Without the broth, the pork can end up more stringy and less tender. You could use water, but your pork loin will be less flavourful if you do, and may require additional salt as the broth also has salt in it. -Kristy

  13. This is so good, and it works great with a pork roast as well as a pork loin. Amazingly, it even works going straight from frozen to the crockpotโ€”in fact, I always start with a frozen roast and, even still, it’s cooked through after four hours or less on low heat! I like to sear the frozen roast/loin on all sides in a cast-iron skillet with some olive oil, a few minutes each side on medium-high heat (with the hood fan on and windows open to avoid setting off the smoke alarms :)). This recipe, some homemade cornbread (https://www.allrecipes.com/recipe/17891/golden-sweet-cornbread/ but with whole-wheat flour), and a simple vegetable or side salad is a great meal for hosting friends of family. They’re always so impressed, even though it’s so easy! ๐Ÿ™‚

    1. Sounds delicious Doug, so glad you enjoyed it. I actually have a pretty mean cornbread muffin recipe that goes well with it too in case you’re interested in trying a different version. ๐Ÿ™‚ https://onmykidsplate.com/easy-mini-cornbread-muffins-recipe/ So glad your friends and family were impressed too, and it sure helps to have an easy recipe so you can spend most of your time enjoying their company. ๐Ÿ™‚ -Kristy

  14. How to reduce a crock pot recipe from 8 serving to 4 serving

    1. Hi Gedwill,

      You could reduce all the ingredients in half. But if you have a 2 pound piece of pork likely you have a tenderloin and not a pork loin. You can still cook your tenderloin this way in the crockpot, but a tenderloin cooks much quicker. For a piece of pork half this size I would recommend checking to see if the pork is done on high after 2/5-3 hours and on low after 4-5 hours. I’d also recommend using a slow cooker closer to a 4 quart size as slow cookers will cook their best and most evenly when they are about 3/4 full. Let me know how it goes! -Kristy

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