Apple Kuchen
["1/2 c. softened butter or margarine", "1 c. yellow cake mix", "1/2 c. flaked coconut (optional)", "1 c. (20 oz.) pie sliced apples, drained", "1/2 c. sugar", "1 tsp. cinnamon", "1 c. dairy sour cream", "2 egg yolks or 1 egg"]
["Heat oven to", "350\u00b0.", "Cut butter into dry cake mix until crumbly.", "Mix", "in coconut.\tPat mixture lightly into ungreased oblong pan, 13 x 9 x 3-inches, building up slight edges.", "Bake for 10 minutes.", "Arrange apple slices on warm crust."]
["butter", "yellow cake", "flaked coconut", "apples", "sugar", "cinnamon", "sour cream", "egg yolks"]