This beautiful meringue buttercream has a light, airy texture and a sweet, buttery flavor.
This recipe is adapted from the perfect party cake recipe found in Dorie Greenspan's Baking: From my home to yours:
Meringue Buttercream Frosting
1 c sugar
4 egg whites
1 1/2 c butter (room temperature)
1 tbsp vanilla extract
1. Place the sugar and egg whites into a heatproof metal bowl and place the bowl over a pot of simmering water. Whisking constantly, heat the mixture until it registers 160° on a food thermometer, which will take about 3 minutes.
2. Using the whisk attachment of an electric mixer, beat the egg and sugar mixture on medium speed until it cools, which will take about 5 minutes. Switch to the paddle attachment and add the butter one stick at a time, beating well between each addition.
3. After the last of the butter has been added, beat the frosting on medium-high speed for another 6-10 minutes, or until the frosting is white, shiny, and smooth. Beat in the vanilla extract.