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Basic Buttercream Filling and Frosting

Use this recipe for both the Salted-Caramel Whoopie Pies and the Powdered-Sugar Coconut Layer Cake.

  • Prep:
  • Total Time:
  • Yield: Makes 5 1/2 cups

Source: Martha Stewart Living, December/January 2015

Ingredients

  • 4 sticks unsalted butter, room temperature
  • 6 cups confectioners' sugar
  • 1 teaspoon pure vanilla extract

Directions

  1. Beat butter on medium-high speed until pale and creamy, about 2 minutes. Reduce speed to medium and add sugar 1/2 cup at a time, beating after each addition, until combined, 1 to 2 minutes. Beat in vanilla. Use immediately, or store in an airtight container in refrigerator up to 3 days. Before using, bring to room temperature and beat on low speed until smooth.

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