1 cup sifted pwdered sugar
1 cup marshmallow creme
1/2 tsp vanilla extract
Beat the butter at medium speed with an electric mixer until creamy; gradually add the sugar, beating well and sugar is dissolved. Add the marshmallow creme and vanilla extract and beat until well blended.
Yield: Approximately 1 1/2 cups
Use to spread between cake layers, use as filling to sandwich cookies together, use to fill cupcakes, etc.