Let’s break down the process into easy-to-follow steps.

Step 1: Preheat and Prepare. Preheat your oven to the temperature listed on the cake mix box instructions. Line a standard 12-cup muffin tin with paper liners.

Step 2: Make Cupcake Batter and Bake. In a medium bowl, prepare the chocolate cake batter according to the package directions. Divide the batter evenly among the prepared muffin cups. Bake the cupcakes according to the box instructions, or until a tester inserted into the center comes out clean.

Step 3: Cool Cupcakes. Let the cupcakes cool completely in the muffin tin.

Step 4: Make Marshmallow Fluff Frosting. In a small saucepan over medium heat, heat ½ cup of water until simmering. In a medium heatproof bowl, combine the egg whites and granulated sugar. Carefully place the bowl on top of the saucepan to create a double boiler. Cook, stirring constantly, until the sugar is dissolved and the mixture is warm to the touch, about 5 minutes.

Step 5: Whip Frosting. With oven mitts or a dry towel, carefully remove the egg white mixture from the saucepan. Using an electric mixer on high speed (or attach the bowl to a stand mixer fitted with the whisk attachment), beat the mixture until it resembles Marshmallow Fluff and forms soft peaks, about 8 minutes. Beat in the vanilla extract and salt. Transfer the frosting to a piping bag fitted with a large star tip (optional).

Step 6: Melt Chocolate. In a clean medium heatproof bowl, place the chocolate chips. Carefully place the bowl over the reserved saucepan of simmering water (you may need to reheat the water). Cook, stirring, until the chocolate is melted, about 4 minutes. Remove from heat and keep warm until ready to use.

Step 7: Prepare Graham Crackers. Carefully break 2 of the graham crackers to form 12 (1-inch) squares; set aside. Transfer the remaining 3 graham crackers to a resealable plastic bag and smash with a wooden spoon or heavy pot to create fine crumbs. Transfer the crumbs to a shallow bowl or plate.

Step 8: Assemble Cupcakes. Turn on the broiler and position a rack closest to the heating element. Dip the edges of each cooled cupcake into the melted chocolate, rotating to coat the rim. Then, dip the edge of each cupcake into the graham cracker crumbs to coat.

Step 9: Frost and Broil. Pipe the marshmallow fluff frosting onto the cupcakes. Arrange the frosted cupcakes on a baking sheet. Broil, watching closely, until the frosting is golden brown, about 30 seconds.

Step 10: Garnish. Garnish each cupcake with a reserved graham cracker square.

These steps are easy to do.