Buttercream is a favorite frosting to use when decorating cakes and cookies, and this Vanilla Buttercream recipe is made even fluffier and more spreadable by the addition of heavy cream, which whips better than regular whipping cream. For a creamy texture, it is important to start with softened butter. To soften butter, take it out of the refrigerator and leave it on the kitchen counter until the butter reaches room temperature. Cream the butter until smooth, then add the powdered sugar, vanilla, and heavy cream. Add a hint of food coloring to the frosting to match your party’s signature colors.