1 can blueberry pie filling
1 can crushed pineapple (20 oz.)
1 yellow cake mix
1 stick butter

Spread pineapple in bottom of a 9 x 13 inch cake pan. Then spread pie filling on top of pineapple. Then spread dry cake mix evenly over this. Slice butter into squares and place on top (all over). Bake at 350 degrees for 1 hour or until golden brown. Put nuts and or coconut on top as desired.