Fantastic Beasts: Butterbeer Cupcakes Recipe! Butterbeer is such a great part of Harry Potter...have they even mentioned it in Fantastic Beasts? I don't know...but it doesn't stop me from making some Butterbeer cupcakes. These are sweet and buttery with an overload of butterbeer frosting too! Here's what you will need for 6 cupcakes: 6 cupcake liners Cupcake baking tray 6 Butterbeer cupcakes: 1 Egg 4 Tablespoons butter softened 4 Tablespoons sugar 3 Tablespoons milk 1/2 cup Flour 1/2 teaspoon baking powder 2 pinches of salt 2 Tablespoons Butter Rum Syrup Fill the liners with the batter and bake 350* for 18 minutes or until bounces back. Mine sunk a little, but it worked out just fine for the next step. Set them aside and let them cool down. While cooling, mix up the frosting. Butterbeer Frosting: 1 Cup Whipped Topping 2 Tablespoons Butter Rum Syrup 1 Tablespoon Butter Pour the frosti...