I doubled the frosting, but this isn’t necessary. I divided it and half I used a whisk and whipped it until it was thicker and that made the thicker frosting on the top of the cake. The other part of the icing I poured all over it and let it soak in and drip down. I scooped up part of this and used it when I served slices of the cake. You can just do one or the other if you want.