The Ultimate S’mores Brownies: A Decadent Campfire Treat in Every Bite
There’s something inherently magical about s’mores. That perfect trinity of toasted marshmallow, melted chocolate, and crisp graham cracker evokes memories of crackling campfires, starry nights, and shared laughter. But what if you could capture that nostalgic enchantment and transform it into a portable, intensely fudgy, and utterly irresistible brownie? Prepare yourself, because these Ultimate S’mores Brownies do exactly that. They take the beloved campfire classic and elevate it to a sophisticated dessert bar, packed with rich chocolate, gooey marshmallows, and nestled on a buttery graham cracker crust. Forget the smoke and the sticky fingers; get ready for a dessert experience that brings the campfire right to your kitchen.


The Irresistible Allure of Brownies: Why We Love Them So Much
Brownies hold a special place in the dessert hierarchy. They’re comfort food personified, capable of transforming any ordinary day into something a little more special. Whether you prefer them fudgy and dense or light and cakey, a good brownie is a testament to the simple power of chocolate. For me, it’s the rich, melt-in-your-mouth fudginess that truly hits the spot. And when you combine that deep chocolatey goodness with other textures and flavors, like the buttery crunch of a graham cracker and the sweet, airy chew of marshmallow, you’re not just making a dessert; you’re crafting an experience.
Our s’mores brownies start with a foundational obsession for perfectly baked, rich, and deeply satisfying chocolate. We’re not just aiming for “good”; we’re aiming for “unforgettable.” This recipe delivers exactly that, creating a brownie base that’s moist, chewy, and brimming with intense chocolate flavor. It’s the ideal canvas for the s’mores treatment, ready to embrace the warmth of toasted marshmallows and the subtle crunch of more graham crackers.

Beyond the Campfire: Bringing S’mores Indoors
S’mores are synonymous with outdoor adventures, but sometimes, you crave that unique flavor profile without the need for a tent or a roaring fire. That’s where these s’mores brownies shine. This recipe captures all the essential elements of the classic s’more – the toasted graham, the gooey chocolate, the melted marshmallow – and ingeniously layers them into a convenient, shareable bar. It’s perfect for parties, potlucks, or simply satisfying that late-night craving for something truly special. No campfire required, just pure, unadulterated indulgence.
The magic begins with a perfectly golden, buttery graham cracker crust, providing that signature crunch and slightly honeyed flavor that defines a s’more. Layered on top is an incredibly fudgy brownie batter, rich with quality chocolate and a hint of espresso powder to deepen the cocoa notes. But the real star of the show is what happens next: a generous layer of mini marshmallows baked right into the brownie, becoming wonderfully gooey and slightly caramelized. And just when you think it can’t get any better, more graham cracker pieces and chopped chocolate are sprinkled on top during the last moments of baking, ensuring a beautiful, textured finish with pockets of melted chocolate and extra crunch.

Crafting Perfection: Tips for the Ultimate S’mores Brownies
Achieving the perfect s’mores brownie is a delightful journey. Here are a few tips to ensure your brownies are nothing short of spectacular:
Choosing Your Ingredients Wisely
- Chocolate Quality: The type of chocolate you use for your brownies makes a huge difference. Opt for good quality semi-sweet chocolate chips or baking bars for a deep, rich flavor. For the topping, milk chocolate adds a classic s’mores sweetness.
- Butter: Use unsalted butter for the brownies and crust to control the overall saltiness of your dessert.
- Graham Crackers: Freshly crushed graham cracker crumbs for the crust yield the best texture. You can crush them in a food processor or by placing them in a Ziploc bag and crushing them with a rolling pin.
- Marshmallows: Mini marshmallows are ideal for scattering evenly throughout the brownie batter and for the topping, as they melt beautifully without overpowering the brownie itself.
- Espresso Powder: Don’t skip the espresso powder! It doesn’t make the brownies taste like coffee; instead, it enhances the chocolate flavor, making it even deeper and more complex.
Mastering the Technique
- Don’t Overmix: When combining your dry ingredients with the wet ones for the brownie batter, mix until *just* combined. Overmixing can develop the gluten in the flour, leading to a tougher, cakey brownie instead of a fudgy one.
- Even Crust: Press the graham cracker crust firmly and evenly into the baking pan. This ensures a stable base that won’t crumble when you cut into the brownies.
- Layering Marshmallows: When adding marshmallows into the batter, spreading them evenly is key. Covering the marshmallows with the remaining batter helps them melt into gooey pockets rather than burning on top.
- Don’t Overbake: This is perhaps the most crucial tip for fudgy brownies. Brownies continue to cook slightly after they come out of the oven. Look for edges that are set and a center that still looks a little moist. A toothpick inserted into the center should come out with moist crumbs, not wet batter. For the final minute of baking with the topping, keep a close eye to prevent the marshmallows and chocolate from burning.
- Cool Completely: As tempting as it is to dig in immediately, allowing the brownies to cool completely (or at least mostly) before slicing will give you cleaner cuts and allow the gooey layers to set slightly. This also intensifies their flavor and texture.
The Ultimate S’mores Brownies
This rich and decadent s’mores brownie recipe is the classic campfire food in bar form! It’s filled with rich chocolate and gooey marshmallows, and sits on top of a buttery graham cracker crust!
Cook: 25 mins
Yields: 9 servings
Ingredients
Graham Cracker Crust
- 6 Tbsp butter (melted)
- 2 Tbsp sugar
- 1 1/2 cups graham cracker crumbs
Brownies
- 1/2 cup butter
- 8 oz semi-sweet chocolate (chips, baking bars, whatever you have)
- 1 cup sugar
- 3 eggs
- 2 tsp vanilla extract
- 1/2 tsp espresso powder
- 1/2 tsp salt
- 3/4 tsp baking powder
- 1 cup all-purpose flour
- 4 Tbsp unsweetened cocoa powder
- 1 Tbsp canola oil
- 1 cup chocolate chips (any kind, milk chocolate recommended)
- OR 1 box brownie mix (following all directions on the back, like Ghirardelli or Betty Crocker)
S’mores Filling/Topping
- 1 cup mini marshmallows
- 3 oz chopped milk chocolate bar
- 2 graham crackers (broken into pieces)
Instructions
Crust
- Preheat oven to 350°F (175°C).
- Mix melted butter, sugar, and graham cracker crumbs together. Once combined, press the mixture firmly into a 9×9 baking pan. Set aside.
Batter
- If using a box mix, prepare the batter according to the directions on the back of the box.
- If making from scratch: Over a double boiler, or in the microwave, melt butter and semi-sweet chocolate together. Once melted, allow to cool for about 10 minutes.
- Next, add in the sugar and mix until well combined. Add in eggs, one at a time, stirring thoroughly after each addition. Then, add in vanilla extract.
- Add in espresso powder, salt, baking powder, flour, and cocoa powder. Mix until just combined, being careful not to overmix.
- Add in canola oil and chocolate chips (if using from scratch), stir gently to incorporate.
- Pour 2/3 of the prepared brownie batter into the baking pan over the graham cracker crust. Sprinkle 1 cup of mini marshmallows evenly over the batter.
- Carefully top the marshmallows with the remaining batter, doing your best to cover all the marshmallows with brownie mixture.
- Bake for 25-30 minutes, or until the brownies are set around the edges and a toothpick inserted into the center comes out with moist crumbs (not wet batter).
- Pull the brownies out of the oven. Immediately top them with the broken graham cracker pieces and chopped milk chocolate.
- Return the brownies to the oven and bake for an additional 1 minute, or just until the chocolate is melted and the graham crackers are slightly toasted.
- Allow the brownies to cool completely on a wire rack before slicing and enjoying. This is essential for clean cuts and for the gooey layers to set.
The nutrition facts provided are calculated using a third-party tool and are estimates only. Actual nutritional content may vary based on the ingredients and brands you use, as well as portion sizes. For accurate results, please consult a registered dietitian or nutritionist.
There you have it – the ultimate s’mores brownie, a dessert that promises to delight with every fudgy, gooey, and crunchy bite. It’s the perfect blend of rich chocolate, soft marshmallow, and the unmistakable flavor of graham crackers. Whether you’re sharing them with loved ones or savoring one all to yourself, these brownies are sure to become a new favorite.
Make sure to tag me on Instagram and leave a rating below to let me know how it turned out!

More Indulgent Brownie Recipes to Explore
If you’ve fallen in love with these s’mores brownies, you’re in for a treat! Here are some other delightful brownie recipes that you might adore:
Chocolate Covered Strawberry Brownies
Experience the romantic pairing of rich chocolate and fresh strawberries in these exquisite brownies.
Mocha Chip Brownies
For coffee and chocolate lovers, these brownies offer a delightful kick of espresso combined with sweet chocolate chips.
Raspberry Cheesecake Swirled Brownies
Indulge in the harmonious blend of tangy raspberries, creamy cheesecake, and rich chocolate brownies.
