Buttercream frosting is a sweet and creamy icing made primarily from butter and powdered sugar. It is often used to decorate cakes, cupcakes, and cookies due to its smooth texture and ability to hold shapes. The frosting can be flavored with vanilla, chocolate, or other extracts, and can be colored with food coloring for decorative purposes. There are several types of buttercream, including American buttercream, Swiss meringue buttercream, and Italian meringue buttercream. Each type varies in texture and sweetness, with some being lighter and fluffier than others. Buttercream is popular for its versatility and ease of use in baking and decorating.