Preheat oven to 400°F for ... cream butter and sugar until smooth. Beat in eggs ... powdered sugar and milk, add vanilla until well ... icing on each cookie.
I've also heard this type of frosting referred to as "Mountain Frosting", ... egg whites and sugar. This icing tastes like ... whisk in the milk). Whisk in the milk, ... decorating. Fill and frost your layers, then lightly sprinkle ... icing soften a bit.