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crusting buttercream icing for sugar cookies

All American Crusting Buttercream Frosting Recipe

I recommend using a crusting buttercream when decorating buttercream sugar cookies. This allows the buttercream to form an outside crust, giving them a bit more protection from getting accidentally squished. This is essential if you plan to transport these cookies from your house to another location or if you want to stack or seal them.
5 from 14 votes
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Course: Dessert
Cuisine: American
Keyword: Crusting All American Buttercream Icing
Prep Time: 1 hour
Mixing Time: 5 minutes
Total Time: 1 hour 5 minutes
Author: Leah Buehler

Equipment

  • Stand Mixer with Paddle Attachment
  • Measuring Spoons & Bowls

Ingredients

  • 1 cup room temperature unsalted butter
  • 1 cup vegetable shortening such as Crisco
  • 2 lbs. plus 1 cup powdered sugar
  • 2 tsp. clear vanilla extract I use artificial
  • 2-4 tbsp. give or take room temperature whole milk

Instructions

  • In your electric mixer, use the paddle attachment to mix the butter and vegetable shortening together. 
  • Slowly mix in the powdered sugar, only adding as much as your electric mixer can handle at a time.
  • Mix in the vanilla extract and 2 tbsp. of milk. If the mixture is too stiff, add more milk. I prefer a consistency of smooth peanut butter for cookies that have a lot of line work and a slightly stiffer consistency for piping flowers.

Notes

This recipe will store nicely in the fridge for a few weeks in an airtight container. You can also leave your decorated cookies at room temperature for several days, as the frosting will be shelf-stable due to the mixture of sugar and fat.