1 box yellow dry cake mix
2 sticks butter
1 can pie filling (blue, etc.)
1 sm. can pineapple
1 (9x13) glass pan

Spread can of pineapple on bottom of pan evenly. Spread pie filling on top (blueberries) evenly. Pour cake mix over fruit. Cut butter into little squares and place on top. Bake at 350 degrees for 1 hour. Great with ice cream.