1 (21 oz.) can cherry or blueberry pie filling
1 (8 oz.) can unsweetened crushed pineapple
1 (9 oz.) pkg. yellow cake mix
1/3 c. butter, melted

Spoon pie filling into lightly greased 8 inch square baking dish. Drain pineapple then spoon over pie filling. Sprinkle cake mix evenly over pineapple. Drizzle butter over cake mix. Bake at 425 degrees for 20 to 22 minutes.