If you want the buttercream to be smoother, add in more whipping cream little by little until you get the texture you desire.
Serving: 1cookie | Calories: 247kcal | Carbohydrates: 35g | Protein: 1g | Fat: 12g | Saturated Fat: 8g | Polyunsaturated Fat: 0.5g | Monounsaturated Fat: 3g | Trans Fat: 0.4g | Cholesterol: 36mg | Sodium: 92mg | Potassium: 69mg | Fiber: 1g | Sugar: 27g | Vitamin A: 318IU | Vitamin C: 0.01mg | Calcium: 28mg | Iron: 1mg