1 (16 oz.) can pineapple, crushed
1 (16 oz.) can cherry pie filling
1 box yellow cake mix
1/2 c. butter

Grease 9 x 13 inch cake pan. Pour pineapple in bottom, including juice. Pour cherry pie filling over pineapple. Pour cake mix over cherry pie filling. Do not stir at any time. Melt butter and pour over top.

Bake at 350 degrees for 1 hour. Serve with whipped cream or ice cream.