1 can (21 oz.) strawberry pie filling
1 can (20 oz.) crushed pineapple
1 box yellow cake mix
1 1/2 sticks butter

In a (15 x 9) Pyrex ungreased plate, place strawberry pie filling, then can of crushed pineapple (juice and all). Then the box of yellow cake mix (as is), just sprinkle on top of pineapple. Then take butter and cut slices small, and place them on top of the dry cake mix.

Place in oven at 325 degrees for about 20 minutes or until brown. Top it with Cool Whip when cold.