Cake just isn't cake without the frosting! And it doesn't get much easier or tastier than a sweet, rich buttercream frosting. Buttercream frostings are traditionally composed of butter, powdered sugar, a flavor, and sometimes a little milk or cream. Don't let the simplicity fool you, though! Buttercreams are the star of the cake, and the flavor possibilities are only limited by your imagination. Try these eight buttercream recipes to find out just how delicious buttercream frosting can be.