1 box chocolate cake mix
2 c. sugar
1 (16 oz.) carton sour cream
1 (12 oz.) pkg. coconut
1 (8 oz.) carton Cool Whip

Prepare cake mix according to directions on package. Make two layers. Combine sugar, sour cream and coconut. Mix well and chill. Reserve 1 cup of coconut mixture. Spread remainder of coconut mixture on layers.

Mix Cool Whip with remaining coconut mixture. Frost top and sides of cake with Cool Whip mixture. Keep cake refrigerated.