- 1 cup butter, softened
- 1 (2-lb.) package powdered sugar
- 1/2 cup plus 2 Tbsp. milk
- 4 tablespoons green crème de menthe
- 2 teaspoons vanilla extract
- 1/8 teaspoon salt
How to Make It
Beat butter at medium speed with an electric mixer until creamy; gradually add powdered sugar alternately with milk and crème de menthe, beating at low speed just until blended after each addition. Stir in vanilla and salt.