Cake:

1 butter cake mix
1/2 c. Crisco
1 c. sour cream
4 eggs
1/4 c. water
1/4 c. sugar

Mix all ingredients together in a large bowl.

Bake in thin layers at 350°F. Time will depend on size of layer.

Icing:

8 oz. cream cheese
1 1/2 c. powdered sugar
1 large Cool Whip
1 can blueberry pie filling

Mix together cream cheese and sugar until smooth. Blend in Cool Whip. Spread icing on each layer. Add pie filling between each layer. After completely icing completed cake, pour remaining pie filling on top of the cake.