Sour Cream Coconut Cake
["1 Duncan Hines butter cake mix", "2 (8 oz.) cartons sour cream", "2 (6 oz.) pkg. frozen coconut", "2 c. granulated sugar", "1 1/2 c. Cool Whip"]
["Cake:", "Bake butter cake as directed on box in two 8-inch cake pans.", "Let cool completely.", "Slice each layer making a 4-layer cake."]
["butter", "sour cream", "frozen coconut", "sugar"]