Instructions

  1. Place peanut butter and margarine in a large mixing bowl. Blend with an elextric mixer on low speed until fluffy, 30 seconds.
  2. Add confectioners sugar, 3 tablespoons milk and the vanilla.
  3. Blend on low speed until the sugar is well combined, 1 minute.Increase the speed to medium and beat until the frosting lightens and is fluffy, 1 more minute. Blend in only 1 tablespoon at a time,extra milk if frosting seems to stiff, up to 2 tablespoons.