1 pkg. white cake mix (dry)
1 stick butter
1 can cherry pie filling
1 c. sour cream
1/4 c. sugar
1 egg beaten

Preheat oven to 350 degrees. With pastry blender mix cake mix and butter together until mixture resembles corn meal. Pat mixture into 13 x 9 inch pan. Bake 15 minutes or until lightly brown. Cool. Spread cherry pie filling over cake mixture. Mix sour cream, sugar and egg together. Spread over cherry filling. Bake 30 minutes or until topping is set. Cool before serving.