Prepare cake mix according to manufacturer’s directions. Deposit 1 pound 8oz into a sprayed and papered 8-inch cake pan. Repeat again to make 2 cakes total. Bake at 350F until cake springs back lightly when touched. Let cool completely and depan. Once cooled, trim the bellies of each cake, saving them for other uses. Place one cake round on a cake board, and fill with chocolate VelveTop. Place the other round on top and crumb coat with chocolate VelveTop. Decorate with chocolate flat icing.