Swiss Meringue Buttercream

Use this with the Cupcake Ice-Cream Cones recipe.

  • Yield: Makes about 5 cups

Photography: YunHee Kim

Source: Martha Stewart Weddings, Summer 2011

Ingredients

  • 5 large egg whites
  • 1 cup plus 2 tablespoons sugar
  • Pinch of salt
  • 1 pound (4 sticks) unsalted butter, room temperature
  • 1 1/2 teaspoons pure vanilla extract
  • Soft-pink food coloring

Directions

  1. Combine egg whites, sugar, and salt in a heatproof mixer bowl, and set over a pan of simmering water. Whisk constantly by hand until the mixture is warm to the touch and sugar has completely dissolved (test by rubbing mixture between your fingertips; it should be smooth).

  2. Transfer the bowl to the mixer stand, and whisk on low speed. Gradually increase speed to medium-high, and whisk until fluffy and cooled. Continue whisking until stiff, glossy peaks form, about 10 minutes.

  3. Reduce speed to medium-low, and add the butter a few tablespoons at a time, blending well after each addition. Whisk in the vanilla. Switch to the paddle attachment, and continue beating on low speed until all air bubbles are eliminated, about 2 minutes. Scrape down sides of bowl with a flexible spatula, and continue beating until the frosting is completely smooth. To tint buttercream, add a small amount of food coloring at a time. Keep buttercream at room temperature if using the same day.

Cook's Notes

Transfer to an airtight container and refrigerate for up to 3 days or freeze for up to 1 month. Before using, bring to room temperature and beat with paddle attachment on low speed until smooth again, about 5 minutes.

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