Coconut Sour Cream Cake
["1 pkg. butter-flavored cake mix", "1 carton sour cream", "1 lb. powdered sugar", "3 pkg. frozen coconut, thawed"]
["Prepare cake according to directions making 2 (8-inch) layers. When completely cool, split both layers.", "Combine sugar, sour cream and coconut and blend well.", "Spread between layers and on top of cake.", "Seal in airtight container and refrigerate 3 days before serving."]
["butter", "sour cream", "powdered sugar", "frozen coconut"]