2 cans blueberry pie filling
2 cans crushed pineapple (3/4 drained)
1 box yellow cake mix
3/4 stick butter
1/2 c. sugar, mixed with 1 tbsp. cinnamon

Pour blueberry pie filling in 9 x 13-inch dish. Pour crushed pineapple over top of blueberries. Sprinkle sugar/cinnamon mixture next. Pour dry cake mix on top, breaking up any lumps. Melt butter and pour on top.

Bake at 375°F for approximately 40 to 45 minutes. Top should be bubbly and turning brown.