S'mores Cupcakes with Marshmallow Filling (No Campfire Needed)

Have you ever wished you could capture the magic of a campfire in a single bite?

These S'mores Cupcakes combine everything people love about the classic treat: a buttery graham cracker crust, rich chocolate cake, a gooey marshmallow center, and a beautifully toasted meringue topping.

They deliver all the nostalgic flavors of traditional s'mores without needing a campsite or fire pit, making them perfect for birthdays, family gatherings, or weekend baking projects.

One bite into the soft chocolate cake and hidden marshmallow filling, and you'll see why these cupcakes disappear so quickly whenever they're served.

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Why You'll Love These S'mores Cupcakes

• All the classic flavors of s'mores in an easy-to-serve cupcake.
• Perfect combination of crunchy, soft, gooey, and fluffy textures.
• Fun baking project for families and kids.
• Beautiful toasted topping that looks bakery-worthy.
• No campfire required.

Simple Ingredients

These cupcakes use easy-to-find ingredients while still delivering all the flavors of classic campfire s'mores.

• Graham cracker crumbs – create a buttery, crunchy foundation.
• Melted butter – helps bind the crust together.
• Chocolate cake mix – creates a rich chocolate base with minimal effort.
• Marshmallow fluff – provides the signature gooey center.
• Swiss meringue frosting – light, silky, and perfect for torching until golden brown.

Servings & Time

• Yield: 12 cupcakes
• Prep Time: 15 minutes
• Cook Time: 18–22 minutes
• Total Time: 33–37 minutes

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Ingredients

Cupcakes

• 1 cup graham cracker crumbs
• 1/4 cup melted butter
• 1 (15.25-ounce) box chocolate fudge cake mix, such as Duncan Hines or Betty Crocker, plus ingredients listed on the package
• 1 cup marshmallow fluff

Swiss Meringue Frosting

• 3 large egg whites
• 3/4 cup granulated sugar
• 1/4 teaspoon cream of tartar
• 1 teaspoon vanilla extract

How to Make Swiss Meringue Frosting

1. Combine the egg whites, sugar, and cream of tartar in a heatproof bowl set over a saucepan of simmering water.
2. Whisk constantly until the sugar dissolves and the mixture reaches 160°F (71°C).
3. Remove from heat and beat with an electric mixer until stiff, glossy peaks form and the mixture has cooled.
4. Mix in the vanilla extract.
5. Use immediately for frosting the cupcakes.

Instructions

1. Prepare the crust: Mix graham cracker crumbs with melted butter until evenly combined. Press about 1 tablespoon into the bottom of each cupcake liner.
2. Make the batter: Prepare the chocolate cake batter according to package instructions.
3. Fill the liners: Spoon batter over the graham cracker crust until each liner is about two-thirds full.
4. Bake: Bake according to package directions, usually 18–22 minutes. Allow cupcakes to cool completely.
5. Add the filling: Remove a small section from the center of each cupcake and fill with marshmallow fluff.
6. Frost and toast: Pipe the Swiss meringue frosting onto each cupcake and carefully toast with a kitchen torch until golden brown.

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Tips for Success

• Cool cupcakes completely before adding marshmallow fluff.
• Use an apple corer to create clean centers for filling.
• Toast frosting gradually to achieve an even golden finish.
• Add extra graham cracker crumbs on top for texture and presentation.

Variations

• Brownie Version: Replace the cupcake batter with brownie batter for a denser, fudgier texture and even richer chocolate flavor.
• Extra Chocolate: Fold 1/2 cup mini chocolate chips into the batter for pockets of melted chocolate throughout the cupcakes.
• Marshmallow Frosting: Swap the Swiss meringue topping for marshmallow buttercream if you prefer a sweeter and more stable frosting.
• Chocolate Drizzle: Finish with melted dark chocolate for a bakery-style appearance and extra richness.

Recipe Notes

Swiss meringue is recommended for this recipe because it creates a stable frosting that pipes beautifully and toasts evenly. Italian meringue can also be used if you are comfortable working with hot sugar syrup.

Storage

Store cupcakes in an airtight container at room temperature for up to 2 days or refrigerate for up to 4 days. Bring to room temperature before serving for the best texture and flavor.

A Sweet Taste of Campfire Nostalgia

With their buttery graham cracker crust, rich chocolate cake, gooey marshmallow center, and beautifully toasted Swiss meringue topping, these S'mores Cupcakes bring all the flavors of a classic campfire treat into an easy homemade dessert. Whether you're baking for a celebration or simply satisfying a sweet craving, they're guaranteed to impress with every bite.