as seen on Martha Stewart and online in other recipes
1 stick softened butter
1 jar of marshmallow cream, 7-8oz
splash of vanilla
powdered sugar, to taste, up to 1 cup
Cream the butter with a hand mixer and then beat in the marshmallow cream. Flavor with vanilla or another extract of your choice and add powdered sugar to increase sweetness to your taste, possibly up to a cup. Use for cupcake or cake filling or as a frosting. Very easy and pretty tasty.