Step 1

Preheat oven to 350 degrees. Spray a 9x13 baking dish with non-stick spray.

Step 2

Spread the blueberry pie filling in an even layer in the baking dish.

Step 3

Sprinkle the dry cake mix over the top of the fruit in an even layer.

Step 4

Thinly slice the butter and arrange it evely over the top of the cake mix, taking care to cover most of the cake mix with butter.

Step 5

Bake for 1 hour or until the top is browned and the filling is hot and bubbly.

Step 6

Serve warm with whipped cream or vanilla ice cream on top.