1 (20 oz.) can crushed pineapple
1 (24 oz.) jar blueberry pie filling
2 sticks butter (1 cup)
1 pkg. white cake mix

In bottom of 9 x 12 inch pan pour crushed pineapple. Pour blueberries on top. Dump on dry cake mix. Melt butter and pour over top of mix. Bake at 350 degrees for 50 to 60 minutes. Top will be golden.