Coconut Frosting and Filling Be The First To Review By Anonymous recipe Add To Favorites Print 305 Views 2 Comments 231 Favorites Perfect for a white layer cake! Coconut Frosting and Filling Ingredients 2 cups sour cream2 cups white sugar1 1/2 cups flaked coconut1 (8 ounce) container frozen whipped topping, thawed Instructions 1 Combine sour cream and sugar; mix well. Stir in coconut. Fold in whipped topping. Spread top and sides of two 9-inch cake layers.