Chocolate Graham Cracker Cupcakes with Toasted Marshmallow

INGREDIENTS

• 2 1/4 cups plus 2 tablespoons sugar
• 1 3/4 cups all-purpose flour
• 3/4 cup plus 1 tablespoon cocoa powder (not Dutch-processed)
• 1 1/2 teaspoons baking powder
• 1 1/2 teaspoons baking soda
• 1 teaspoon salt
• 2 large eggs
• 1 cup whole milk
• 1/2 cup vegetable oil
• 2 teaspoons pure vanilla extract
• 1 cup boiling water
• 1 1/2 cups graham cracker crumbs (from about 20 squares)
• 1/3 cup unsalted butter, melted
• 9 ounces bittersweet chocolate, finely chopped
• Marshmallow Frosting