1/2 stick butter
1 box yellow cake mix
1 can apple pie filling
1 egg
1 c. sour cream
1/2 c. sugar
1/2 tsp. cinnamon

Melt 1/2 stick butter and mix with yellow cake mix. Press in greased 9"x13" pan. Bake 10 minutes at 350 degrees. Then pour 1 can apple pie filling over cake. Mix 1 egg and 1 cup sour cream. Pour over cake. Mix 1/2 cup sugar with 1/2 teaspoon cinnamon. Sprinkle on top. Bake 25 or 30 minutes.