This is a coconut cake and the filling consists of sugar, sour cream, and coconut. You take out a cup of the combination and add whipped topping to it for the "frosting." It isn't something you can really decorate on, but just before my daughter got here I did the little bit of decoring. The circles are fondant that I made earlier. (This cake is to be refligerated for three days before you eat it and my daughter had requested it for her birthday.)