Yield: about 3 cups
1 cup of unsalted butter, softened
2 ½-3 cups confectioners’ sugar
1 tsp vanilla extract
Milk or heavy cream, optional
In a stand mixer fitted with the whisk attachment, mix together the butter and confectioners sugar. Begin on low speed until crumbly, and then increase to high and beat for 3 minutes.
Add vanilla extract and beat again for another minute. If you find the buttercream is too stiff, you may add milk or heavy cream 1 tablespoon at a time until the mixture is spreading consistency.