1 lg. can peaches
1 lg. can crushed pineapples
1 box yellow cake mix
1 c. water
1 stick butter

Lightly grease a 9 x 13 inch rectangular pan. Pour peaches and pineapples, including juice, in the pan. Pour dry cake mix on top. Pour water evenly over this. Melt butter and pour over top, spreading to even out. Bake according to directions on cake mix.