Chocolate peanut butter frosting

Why I Love This Recipe
Ingredients You'll Need
Chocolate peanut butter frosting:
1/4 cup margarine
1/4 cup milk
1/8 cup cocoa
2 1/8 cups powdered sugar
1/2 teaspoon vanilla
1/8 cup peanut butter
Directions
For frosting:
Combine margarine, milk and cocoa in a saucepan; bring to boil, stirring constantly.
Remove from heat and add remaining ingredients; beat at medium speed until smooth.
Drizzle over cookies.