Gooey peach dump cake takes a classic peach cobbler and makes it with cake mix!
In a medium mixing bowl, mix together brown sugar, ¼ teaspoon cinnamon and salt and set to the side.
Dump the dry yellow cake mix evenly over the peaches. Spread lightly but evenly with a spatula.
Slice butter into thin pats. Place butter all over the cake, covering as much cake mix surface as possible.