Ingredients

Scale

Cake:

1 box Devil’s Food chocolate cake mix
ingredients listed on the box (oil, eggs, water)

Marshmallow Filling:

2 cups marshmallow fluff
2 Tablespoons water

Chocolate Fudge Filling:

1 cup semi-sweet chocolate chips
1 (14 oz.) can sweetened condensed milk
2 Tablespoons heavy whipping cream

Topping:

2 envelopes of instant hot chocolate mix
2 cups heavy whipping cream
1 teaspoon vanilla
2–3 cups mini marshmallows
hot fudge sauce-for decoration

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Instructions

Bake the cake: Prepare your Devil’s Food cake mix according to the box instructions and bake it in a 9×13-inch dish. Let it cool slightly, but don’t wait too long—you want it warm enough to absorb the fillings.
Poke the holes: Grab the handle of a wooden spoon and poke holes all over the cake, about an inch apart. Go about two-thirds of the way down—not all the way to the bottom. This keeps the cake moist without it falling apart.
Add the marshmallow filling: Microwave the marshmallow fluff with a little water until it’s smooth and pourable. Use a piping bag or zip-top bag to fill each hole, then spread the rest across the top of the cake. Pop it in the fridge to set.
Make the chocolate fudge layer: Combine chocolate chips, sweetened condensed milk, and heavy cream in a microwave-safe bowl. Heat in 20-second intervals, stirring until smooth and glossy. Spread it over the marshmallow layer and chill again until firm.
Whip the topping: Beat heavy cream, hot chocolate mix, and vanilla until stiff peaks form. Spread it generously over the chilled cake, then garnish with mini marshmallows and a drizzle of hot fudge sauce. Voilà!

Notes

Presentation tips: make it look irresistible

When serving this cake, I love to keep the hot chocolate theme front and center. Sprinkle extra mini marshmallows over each slice, drizzle with hot fudge sauce, and maybe even dust the top with cocoa powder. If you’re hosting a party, try serving it with mugs of hot cocoa to really play up the theme. Oh, and if you’re feeling fancy, use a torch to toast the marshmallows for a s’mores-like effect. So fun!

Author: Lily
Prep Time: 30 minutes
Cook Time: 30 minutes
Category: Dessert