This makes a beautiful cake and it is delicious! It is not as difficult as it sounds and the longer it stays in the frig, the better it gets!

1-18 1/2 oz. pkg. butter flavored cake mix
2 cups sugar
16 oz. sour cream
12 oz. pkg. frozen coconut, thawed
1 1/2 cups Cool Whip

1 -18 1/2 oz. pkg. butter flavored cake mix 2 cup s sugar 16 oz. sour cream 12 oz. pkg. frozen coconut, thawed 1 1/2 cups Cool Whip

Prepare cake mix according to package directions, making two 8" round layers. Let cool completely. Split each layer into two and set aside. Combine sugar, sour cream and coconut and mix well. Chill. Reserve 1 cup of this mixture for frosting. Spead filling between the layers of cake, stacking on top on each other.Combine the 1 cup of reserved sour cream mixture with Cool Whip and blend well. Spread on top and sides of cake.  Seal in an airtight container and refrigerate for 3 days before serving.