1 store made angel food cake
1 lg. Cool Whip
1 (8 oz.) sour cream
1 can blueberry filling
1 (4 oz.) cream cheese
1 tsp. butter

Cut cake in half horizontally. Mix sour cream, Cool Whip, cream cheese and butter together. Put mixture on top of the bottom half of cake. Then top with blueberry filling. Place top half of cake on top and repeat above. Great for L.S.U. parties; cake turns purple.