Quick Buttercream Frosting
You may use all butter in this quick buttercream, but using vegetable shortening makes a frosting that will be a little firmer in warmer temperatures. Also, using the optional meringue powder, while not necessary, will help your frosting holds its shape.
This amount of frosting is sufficient to frost the top of a 9" x 13" cake, or about 15 to 18 cupcakes. If you're frosting a layer cake, double the recipe to have enough frosting to pipe decorations.