Frosting recipe

If you can refrigerate the cake, Merril's buttercream icing is good, but it calls for eggs...you can add cinnamon extract for flavor instead of the vanilla.

http://www.food52.com/recipes/3048_buttercream_icing

For a ginger cream frosting on my cupcakes, I use a stick of butter and a cup of powdered sugar and I put candied ginger on the top.