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Cupcakes frosted with swirls of Swiss meringue buttercream frosting on a marble cake stand.

Swiss Meringue Buttercream

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  • Author: Shelly
  • Prep Time: 20 min
  • Total Time: 20 minutes
  • Yield: Frosts an 8" cake 1x
  • Category: Dessert
  • Method: Stovetop
  • Cuisine: American

Description

Make perfect Swiss meringue buttercream frosting from scratch! This easy step-by-step tutorial makes light and fluffy SMBC that’s just sweet enough. It adds a silky, fancy touch to any cakes and cupcakes!


Ingredients

Scale
  • 5 large egg whites
  • 1 1/4 cup granulated sugar
  • 1 pound (4 sticks) butter, cut into tablespoons, at room temperature (see note)
  • 2 teaspoons pure vanilla extract or vanilla bean paste

Instructions

  1. Combine egg whites and sugar into the heatproof bowl of a standing mixer set over a pan of simmering water, much like a double boiler. Whisk constantly by hand until the mixture is sugar has dissolved (the mixture should feel completely smooth when rubbed between your fingertips, no grainy sugar), approx 2 minutes.
  2. Put mixing bowl on mixer and using the whisk attachment start mixing. Begin on low, raising the speed up to medium high. Beat until stiff peaks form, about 10 minutes.
  3. Now add your butter, 2 tablespoons at a time. Beating on medium until each addition of butter is added.
  4. Now add your vanilla.
  5. Remove the whisk attachment and replace it with your paddle attachment.
  6. Mix with paddle for 2 minutes on low speed working out the air bubbles.

Notes

  • I use salted butter as a personal preference. You can use unsalted butter if you prefer.
  • Makes enough frosting to fill and frost one 8″ layer cake.
  • Store airtight in the fridge for 3 days.

Nutrition

  • Serving Size: 1 slice
  • Calories: 383
  • Sugar: 21 g
  • Sodium: 34 mg
  • Fat: 32.5 g
  • Carbohydrates: 21.1 g
  • Protein: 2.9 g
  • Cholesterol: 158.5 mg
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