Peanut Butter Filling for Whoopie Pies
Ingredients
- 1/2 cup peanut butter
- 3 tablespoons butter
- 2 cups powdered sugar
- 3 tablespoons milk
Instructions
- Beat peanut butter and butter together then add powdered sugar and milk and mix until creamy.
- Fill a piping bag and swirl the filling onto the cooled cookies.