My favorite part of just about any cake or cupcake is the frosting. But after working as a cake decorator for my pivotal high school years, I’ve become EXTREMELY picky with buttercream flavors. I cannot stand buttercream where the main flavor is butter, or sugar. The flavors need to blend nicely. That is why marshmallow buttercream is my go to whenever I am decorating cakes or cupcakes. It is also super easy to add flavoring so the marshmallow flavor isn’t that detectible. But the base of my buttercream frosting is the marshmallow flavor. This buttercream is seriously loved by all. My child who LOATHES any sort of frosting or icing…