Peanut butter frosting

Peanut butter frosting(Adapted from One Smart Cookie)

2 tablespoons peanut butter
1 tablespoon butter, softened
1/4 cup sugar
1/4 cup milk
1 3/4 cups confectioners' sugar
1 teaspoon vanilla extract

In a small saucepan, combine peanut buter, butter and sugar. Stir over medium heat until melted and smooth. Transfer to a medium bowl and mix in the milk. Cool completely.

Add in confectioners' sugar and vanilla. Beat until it is spreadable and smooth.

Makes about 1 1/2 cups