Preheat oven to 350 degrees.
Cut butter into dry cake mix until crumbly. Mix in coconut.
Pat mixture lightly into ungreased oblong pan.( 9” x 13”)
Bake 10 min.
Arrange apple slices on warm crust.
Mix sugar and cinnamon and sprinkle on apples.
Blend sour cream and egg yolk. Drizzle over apples.
(Topping will not completely cover apples)
Bake 25 minutes or until edges are light brown.
(Do not over bake) Serve warm. It is also good cold.
Thanks to Jerry Ann Guidroz for this recipe. Her Aunt Mae gave it to her years ago.