Chocolate Fudge Cupcakes with Marshmallow Filling

Ingredients (19)

• FOR THE CUPCAKE BATTER:
• 3/4 cup natural cocoa powder
• 2/3 cup boiling water
• 1 cup buttermilk
• 1 3/4 cups all-purpose flour
• 1 1/2 tsp baking soda
• 1/2 tsp Kosher salt
• 3/4 cup unsalted butter
• 1 cup sugar
• 1/2 cup light brown sugar
• 3 large eggs
• 2 tsp pure vanilla extract
• FOR THE FILLING AND ICING:
• 3/4 cup confectioners' sugar
• 3 tbsp unsalted butter
• 1/2 cup store-bought marshmallow creme fluff
• 1/2 tsp pure vanilla extract
• 1 tbsp heavy cream
• 1 16 oz Pillsbury Filled Pastry Bag in Chocolate Fudge