Lemon Blueberry cake

1 box lemon cake mix
20 oz can crushed pineapple, do not drain
20 oz can blueberry pie filling

Mix dry cake mix with pineapple. Pour into a 13x9 inch greased baking dish. Spoon blueberry filling over mix. Bake for 25 - 30 minutes at 350. Serve with ice cream. 10 servings