Simple Vanilla Frosting
Our simple frosting recipe is made with just four basic ingredients: unsalted butter, confectioners' sugar, milk, and vanilla extract. This basic buttercream is one of the most simple frostings you can whip up—and it elevates cakes and cupcakes alike. Try it on top of these chocolate chip cookie cupcakes (you won't regret it!).
Martha Stewart Living, July 2011