Step 1

Spread the apple pie filling in an even layer in a 5- to 6-quart slow cooker.

Step 2

Place the cake mix and melted butter in a large bowl and stir well until the mix is crumbly. Spread in an even layer over the pie filling. Place a clean dish towel or large sheet of paper towels over the slow cooker, making sure it completely covers the top of the slow cooker, but does not sag down onto the pie.

Step 3

Cover and cook on the HIGH setting until the top is set, 2 hours. Serve warm.