18 3/4 oz. box yellow cake mix
1 1/2 c. sour cream
4 eggs
2 (9.9 oz.) pkg. dry coconut-pecan frosting mix
1 stick butter, cubed

Grease and flour 9 x 13 inch pan. Preheat oven to 350 degrees. Blend cake mix with sour cream and eggs. Spread 1/2 batter into pan. Sprinkle with 1 box frosting mix. Spread remaining batter on top. Sprinkle with second box of frosting mix. Dot top with butter. Bake 35-40 minutes. (Top of cake may be uneven.)