Cover the cake with a thin layer of buttercream using a pallet knife. The buttercream will help the fondant stick to the cake, so make sure to get the top and sides.
How to Make It. 1. Before you begin, be sure that your cake is covered with a layer of buttercream at least thick. This frosting layer helps the fondant stick.
How to Cover A Cake with Fondant For A Beginner How to Make MARSHMALLOW FONDANT - The Best.