Cream the Butter and Peanut Butter:

• In a large mixing bowl, use an electric mixer to beat the softened butter and creamy peanut butter together until the mixture is light and fluffy.

Incorporate the Sugar:

• Gradually add the confectioners’ sugar to the peanut butter mixture, beating continuously to maintain a smooth consistency.

Adjust Consistency with Milk:

• Add the milk, one tablespoon at a time, beating after each addition until the frosting reaches your desired spreading consistency.