1 yellow cake mix
1/2 c. butter, melted
1 can apple pie filling
1 c. sugar
1 1/2 tsp. cinnamon
1 c. sour cream (store variety)
1 egg, beaten

Preheat oven to 350 degrees. Mix cake mix and butter together. Put in 9 x 13 inch pan. Bake 10 minutes. Spread pie filling on top of crust. Mix cinnamon and sugar and sprinkle mixture over top of apples. Beat the egg and add sour cream. Pour and spread evenly over apples. Bake 40 to 50 minutes until sour cream mixture looks set.