1/2 cup butter, at room temperature
3 3/4 cups powdered sugar
1 tablespoon whipping cream
1/8 teaspoon peppermint extract
red food coloring

In a mixing bowl, cream butter well; blend in powdered sugar gradually, mixing until smooth. Add whipping cream, peppermint extract, and food coloring; blend well. Spoon batter into a cake decorator tube and using a shaped tip, press shapes onto waxed paper. Let mints set up for 30 minutes. Store in an airtight container in a cool place.

Source: http://southernfood.about.com/od/candyrecipes