I always find it better to have too much frosting rather than not enough, especially when it comes to a 3-layer cake where the frosting is used both on top and cake and in the filling. That is why this recipe makes a very generous amount of frosting so that you won't run out before covering the cake. If you have extra frosting you can use it to frost cupcakes or cookies. Or dip graham crackers or animal crackers in it for a sinfully sweet treat.