Creamy, fluffy, and silky smooth, Swiss meringue buttercream is perhaps the queen of all buttercream frostings. While it takes a little bit more time than your standard American buttercream, the result is rich and buttery frosting that is not cloyingly sweet.
Swiss meringue buttercream is made by cooking egg whites with sugar and then beating it into a fluffy, glossy meringue before adding butter (that’s right, you only need 3 ingredients to make it!) From there you can flavor it with simple vanilla, lemon curd, or any number of other fun flavor possibilities.
This recipe makes about 4 cups of buttercream, enough to frost and fill a 6-inch, three layer cake (like this gorgeous Triple Lemon Layer Cake). Double the recipe for an 8-inch layer cake, or triple for a multi-tiered cake (google ‘buttercream calculator’ and there are a ton of free tools to help you determine exactly how much buttercream you’ll need).
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