1 small can crushed pineapple
1 can cherry pie filling
1 box yellow cake mix
3/4 to 1 cup crushed pecans
1 stick butter

Preheat oven at 350°F. Grease 9 x 13 baking dish. Dump cherries with juice into baking dish. Pour crushed pineapple over cherries. Dump box of dry cake mix over pineapple and cherries. Add pecans to top. Dot with butter.

Bake 1 hour.