1 box Duncan Hines butter cake mix
1 c. sour cream
1 stick butter or 1/2 c. oil
1/4 c. sugar
1/4 c. water
4 eggs

Mix and beat on high speed 2 minutes. Bake 45 to 55 minutes in oblong, greased and floured pan. Cool 25 minutes and remove from pan. Cool completely. Top with following: 1/2 c. milk 8 oz. cream cheese, softened 1 lg. carton Cool Whip, thawed 1/2 c. powdered sugar 1 can blueberry pie filling

Beat cheese with milk. Add sugar, beating well. Blend in Cool Whip with spoon. Spread on cooled cake with layer of bananas on top and sides. Top with blueberry pie filling.