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Campfire S’mores Brownies – Fudgy, Toasted & Nostalgic.
Nothing evokes the feeling of a summer night quite like a s’more. This Campfire S’mores Brownie recipe takes that childhood nostalgia and concentrates it into a decadent, triple-layered bar. We swap the thin graham cracker for a buttery, pressed crust and top a dark, fudgy brownie with a blanket of fire-toasted marshmallows.
The key to this recipe is the textural contrast: the snap of the graham cracker, the dense chew of the brownie, and the sticky, caramelized “pull” of a marshmallow that has been kissed by a flame.
The S’mores Blueprint
To ensure this doesn’t turn into a sticky mess, we build the brownie in layers to maintain the structural integrity of the crust while keeping the topping gooey.
| Layer | Component | Purpose |
| The Foundation | Graham Cracker Crust | Provides a buttery, honey-wheat crunch that anchors the fudge. |
| The Anchor | Fudgy Cocoa Brownie | A dense, dark chocolate layer that balances the sweet topping. |
| The Melt | Milk Chocolate Chunks | Mimics the classic Hershey’s bar experience. |
| The Crown | Toasted Marshmallows | Added at the very end to achieve a campfire “char.” |
Ingredients
The Graham Crust
- 1 1/2 cups Graham cracker crumbs (about 10–12 sheets)
- 6 tbsp Unsalted butter, melted
- 2 tbsp Sugar
The Fudgy Brownie
- 1/2 cup Unsalted butter, melted
- 1 cup Granulated sugar
- 2 large Eggs
- 1 tsp Vanilla extract
- 1/3 cup Unsweetened cocoa powder
- 1/2 cup All-purpose flour
- 1/4 tsp Salt
The Topping
- 2 cups Large marshmallows (halved) or mini marshmallows
- 4 oz Milk chocolate bar, broken into chunks
- 2 Graham crackers, roughly broken for garnish
Step-by-Step Instructions
1. The Buttery Base
Preheat your oven to 350°F (175°C). Line an 8×8-inch pan with parchment paper.
Mix the graham cracker crumbs, melted butter, and sugar until it feels like wet sand. Press it firmly into the bottom of the pan. Bake for 8 minutes to set the crust.
2. The Fudgy Layer
In a medium bowl, whisk the melted butter and sugar. Add eggs and vanilla, beating until smooth. Sift in the cocoa powder, flour, and salt. Fold the batter gently until just combined.
Pour the brownie batter over the warm graham crust and spread to the edges. Bake for 20–22 minutes. The center should be set but still slightly soft.
3. The “Campfire” Finish
Remove the pan from the oven. Immediately top the hot brownies with the milk chocolate chunks and the marshmallows.
The Pro Secret: Switch your oven to the Broil setting. Place the pan back in for 1–2 minutes. Watch it like a hawk! The marshmallows will go from white to perfectly toasted gold in seconds. For a true “burnt” campfire flavor, you can use a kitchen torch.
4. The Cool Down
Let the brownies cool for at least 30 minutes before slicing. If you cut them while the marshmallows are molten, the layers will slide apart.
Flavor and Texture Notes
This is a high-intensity dessert. The brownie base is deep and slightly bitter, which is essential to balance the sugar-heavy marshmallows. When you take a bite, you get the buttery saltiness of the crust first, followed by the truffle-like chocolate, and finally the smoky, caramelized sweetness of the toasted marshmallow.
Tips and Variations
- Salted S’mores: Sprinkle a pinch of flaky sea salt over the marshmallows immediately after toasting to cut through the sweetness.
- The “Indoor” Campfire: If you don’t want to use a broiler, use a kitchen blowtorch to toast the marshmallows individually for more control and a deeper “char.”
- Peanut Butter Twist: Drizzle 1/4 cup of melted peanut butter over the brownie batter before baking for a “Fluffernutter” style s’more.
- Storage: These are best eaten the day they are made. If storing, keep them in an airtight container at room temperature. Do not refrigerate, as the graham crust will lose its crunch and the marshmallows will become tough.
FAQ
Can I use a box brownie mix?
Yes! If you’re short on time, a high-quality “Fudge” box mix works perfectly. Just ensure you still do the pre-baked graham cracker crust to prevent sogginess.
How do I get a clean slice?
Marshmallows are notoriously sticky. To get clean squares, lightly grease your knife with non-stick cooking spray or dip it in hot water (and wipe dry) between every single cut.
My marshmallows didn’t brown, they just melted. Why?
This happens if the oven rack is too low. For a quick toast without melting the entire marshmallow into a puddle, place the rack in the top third of the oven when using the broiler.
Conclusion
Campfire S’mores Brownies are a masterclass in nostalgia. They take the messy, outdoor experience of a campfire and refine it into a sophisticated, shareable treat that works just as well at a dinner party as it does at a backyard BBQ.
Would you like me to suggest a recipe for a “Smoked Bourbon Milkshake” to serve alongside these, or perhaps help you find a “No-Bake” version of this recipe for those hot summer days?