Pour pie filling into a slow cooker and top with the dry cake mix in an even layer. Do not stir.
Scatter the butter over the top.
Cover and cook on high for 2 hours.
Serve warm with vanilla ice cream.
Notes
Note: Feel free to swap out the blueberry pie filling with any pie filling or use two different fillings.Nutrition information: 415 calories; 12.7g fat; 361mg salt; 73.8g carbohydrates; 2.3g protein.