Preheat oven to 375°F Mix all ingredients except flour in bowl of stand mixer. Beat at high speed 3 minutes, then add flour. Beat at low speed 1 minute, just until mixed.
Fill cookie press and press on ungreased cookie sheets. Decorate with sprinkles or sparkling sugar. Bake at 375°F for 8-10 minutes. Cool slightly, then transfer cookies to rack to cool completely.
