1 box yellow cake mix
1 stick butter
1 can apple slices in water or juice
1/4 c. sugar
1 egg
1 c. sour cream
1 tbsp. cinnamon

Cut butter into cake mix. Mash in pan. Bake 10 minutes at 350 degrees. Spread apple slices on next. Sprinkle with sugar and cinnamon. Top with egg and sour cream (which has been mixed together). Cook 25 minutes at 350 degrees.