Peanut Butter Icing

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

In small saucepan, heat butter over low heat, stirring occasionally until butter turns light amber. Remove from heat. Whisk in sugar, milk and vanilla extract. Stir in peanut butter. Stir until of spreading consistency.