Buttercream icing with just the right about of peppermint flavor. Perfect peppermint icing recipe for winter baked goods! This peppermint icing recipe was cut in half from the measurements found here. Peppermint icing Prep time: 10 mins Total time: 10 mins Ingredients 1/2 cup (2 sticks) butter, softened 1 Tablespoon milk 1 teaspoon peppermint extract