Spray the inside of a 4- to 6-quart crock pot with cooking spray.
Pour both cans of apple pie filling into the bottom and spread evenly.
Drizzle caramel sauce over the apple filling.
Sprinkle dry cake mix evenly over the top. Do not stir.
Drizzle melted butter evenly over the cake mix, covering as much surface as possible.
Lay 1 to 2 paper towels across the top of the crock pot and place the lid on top.
Cook on High for 2 to 2 1/2 hours, until hot and set.
Serve warm with vanilla ice cream or Cool Whip.
Notes
Do not stir the layers; the dry cake mix and butter form the topping as it cooks. Paper towels catch condensation so the topping does not get soggy. The topping softens after refrigeration, so this is best served fresh. Leftovers keep refrigerated for 3 to 4 days.
Keyword Crock Pot Apple Crisp, slow cooker apple dessert