1 can crushed pineapple
1 can of cherry (or blueberry) pie filling
yellow cake mix
1 stick of butter, melted
cool whip

Layer 8 x 12-inch pan with pineapple, then pie filling. Sprinkle dry cake mix on top. Pour melted butter over cake mix. Cook for 20 minutes in 350°F oven. Serve hot with whipped cream.