16 oz. sour cream
1 to 2 pkg. frozen coconut
2 c. sugar
1 tsp. vanilla
1 tsp. coconut flavoring
1 box yellow cake mix (plus ingredients to make)

Mix above ingredients except cake mix; place in refrigerator. Let stand overnight.

Bake cake mix. Let cool. Spread on filling. Sprinkle top and sides with flaked coconut if desired.