Here is Paula Dean's version.

COCONUT GOOEY BUTTER CAKE

1 stick (1/2 cup) margarine, melted
1 (2-layer size) yellow cake mix, without pudding
3 egg, divided use
1 cup pecans, chopped
1 lb. powdered sugar
1 (8 oz.) pkg. cream cheese, softened
1 cup coconut

Preheat oven to 350 degrees F.

Mix margarine, cake mix, 1 egg and pecans together and pat into a greased 9x13 pan.

Mix together powdered sugar, cream cheese, remaining 2 eggs, and coconut; and pour over cake mixture in pan.

Bake 45 minutes at 350 degrees F.