1 box Duncan Hines deluxe yellow butter cake mix

Bake as directed on package.

FILLING AND ICING:

2 c. sugar
8 oz. sour cream
1 pkg. (6 oz.) frozen coconut

Mix and let stand overnight. Split cold cake into 4 layers. Spread with filling. Save 1 cup of filling for icing.

1 c. filling
1 1/2 c. Cool Whip

Spread over cake. Let stand 3 days in refrigerator before cutting. Keep in refrigerator in air tight container.