Name: S’mores Brownies Recipe
Prep time: 15 min
Cook time: 35 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 12 graham cracker squares; 100 g dark chocolate or semi-sweet chocolate, finely chopped; 50 g natural cocoa powder; 1 teaspoon espresso powder; 230 g unsalted butter, roughly cubed; 4 large eggs, room temperature; 150 g granulated sugar; 100 g brown sugar; 100 g all-purpose flour; 36 large marshmallows

If you’ve ever dreamed of the perfect crowd-pleaser dessert that combines rich, chocolaty goodness with nostalgic campfire treats, the S’mores Brownies Recipe is exactly what you need. This delightful dessert takes the classic s’mores flavors you adore—gooey marshmallows, crunchy graham crackers, and melted chocolate—and transforms them into a dense, fudgy, and irresistible brownie bar. Whether you’re hosting a gathering or simply craving a sweet treat to indulge in, these brownies are an absolute celebration on a plate, packing layers of texture and flavor that make every bite feel like a warm hug.

Ingredients You’ll Need

The images show a square white baking pan on a white marbled surface. Inside the pan are square graham crackers, arranged to cover the bottom evenly in a grid of three-by-three. The graham crackers have a light brown color with small darker spots and a slightly rough texture. In the first image, a woman's hand is placing one cracker in the empty space of the pan. In the second image, the pan is fully lined with neatly arranged graham crackers, filling it completely with no gaps. Photo taken with an iphone --ar 4:5 --v 7

Whipping up this S’mores Brownies Recipe is surprisingly straightforward because the ingredients are simple yet essential to nailing that perfect texture and balance of flavors. Each component plays a role—from the nutty browned butter enriching the chocolate base to the crunchy graham crackers adding that iconic s’mores crunch.

12 graham cracker squares: Provides a crisp, subtly sweet base reminiscent of classic s’mores.
100 g dark chocolate or semi-sweet chocolate (finely chopped): Adds depth and richness to the brownie’s chocolatey heart.
50 g natural cocoa powder: Enhances the chocolate intensity and helps balance sweetness.
1 teaspoon espresso powder: Amplifies the chocolate flavor without making the brownies taste like coffee.
230 g unsalted butter (roughly cubed): Browned to add nuttiness and moistness to the brownies.
4 large eggs (room temperature): Binds the ingredients while keeping the brownies tender.
150 g granulated sugar: Sweetens the batter with a clean, classic sweetness.
100 g brown sugar: Adds moisture and a touch of caramel flavor for softness.
100 g all-purpose flour: Provides structure without making the brownies cakey.
36 large marshmallows: The crowning glory—melty, toasted, gooey marshmallows that make these brownies unforgettable.

TIP

You’ll find the full ingredient list, instructions, and print option in the recipe card below.

How to Make S’mores Brownies Recipe

Step 1: Prep Your Pan and Graham Cracker Base

Start by preheating your oven to 350°F and lining a 9×9 inch pan with parchment paper on all sides—this makes lifting out the brownies super easy later. Arrange a single layer of graham crackers at the bottom, breaking them if needed to fill all corners snugly. This crunchy foundation is what gives the S’mores Brownies their signature texture contrast.

Step 2: Prepare the Chocolate Mix

In a medium bowl, combine your finely chopped dark chocolate, cocoa powder, and espresso powder. This blend will become the luscious chocolate base once the butter is added.

Step 3: Brown the Butter

Heat the cubed butter in a medium pan over medium heat. Soon after melting, the butter will start to fizz and bubble as the milk solids separate. Stir frequently and watch closely as it begins to foam and then turn a golden brown, releasing a nutty aroma. Be ready to take it off the heat immediately to avoid burning. This browned butter is the secret to deep, complex flavors in your brownies.

Step 4: Melt the Chocolate in the Browned Butter

Pour the browned butter into the bowl with your chocolate mixture and stir until fully melted and smooth. Set this aside to cool for 10 to 15 minutes while you prepare the batter. Letting this cool prevents the eggs from scrambling when added.

Step 5: Mix the Brownie Batter

In a large bowl, whisk the eggs together with both granulated and brown sugars for about 2 minutes until blended and a bit frothy. Gradually add the chocolate and butter mixture while whisking. Finally, gently fold in the all-purpose flour until just combined, being careful not to over-mix to retain that fudgy texture.

Step 6: Assemble and Bake

Pour the batter over your graham cracker base, spreading it evenly to the corners with a spatula or by gently shaking the pan. Bake for 28 to 30 minutes. You want the edges set but the center to remain just slightly moist—think of a toothpick coming out with a few wet crumbs clinging.

Step 7: Toast the Marshmallows

As soon as the brownies come out of the oven, move your rack to the top position and spread the marshmallows evenly on top. Switch your oven to the broiler and carefully place the pan back inside. Marshmallows toast fast, so watch closely for 2 to 3 minutes until golden and bubbly for that melty, cloud-like finish.

Step 8: Cooling and Slicing

Cool the brownies on a wire rack for at least 30 minutes before lifting them with the parchment paper. For easier slicing and to avoid marshmallow stickiness, lightly oil your knife and gently run it between the marshmallow layer and parchment paper. To speed up cooling or firm them up, pop your brownies into the fridge after about an hour.

How to Serve S’mores Brownies Recipe

The image shows square pieces of a dessert with three layers: a golden brown crust as the bottom layer, a thick and rich dark brown chocolate layer in the middle, and a fluffy white marshmallow topping toasted to a golden brown on top, each square topped with four evenly browned marshmallow sections. One piece is turned to show the inside layers clearly, while the others are placed on a white marbled surface. The texture of the marshmallow is soft and puffy, and the chocolate layer looks moist and dense. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of crushed graham crackers on top of the toasted marshmallows adds a charming rustic touch. For extra extravagance, a drizzle of melted chocolate or a pinch of flaky sea salt provides a lovely contrast to the sweet layers.

Side Dishes

Serve your S’mores Brownies alongside a scoop of vanilla ice cream or a dollop of whipped cream to balance the richness with cool creaminess. Fresh berries or a simple berry compote can also add a bright, tart pop to each bite.

Creative Ways to Present

Try cutting the brownies into small squares and serving them on wooden skewers to mimic real s’mores on sticks. Alternatively, place a brownie square atop a homemade or store-bought graham cracker tied with twine for a cute, gift-worthy treat perfect for parties or picnics.

Make Ahead and Storage

Storing Leftovers

Store any leftover S’mores Brownies in an airtight container at room temperature for up to 3 days. Beyond that, they may start losing their signature gooey texture but will still taste delicious.

Freezing

You can freeze the brownies for up to 2 months. Wrap them tightly in plastic wrap and then foil to protect against freezer burn. Thaw overnight in the fridge or at room temperature before enjoying.

Reheating

Warm individual slices in the microwave for about 10 seconds to revive the melty marshmallow and chocolate. Be careful not to overheat, or the marshmallows may harden or toughen.

FAQs

Can I use milk chocolate instead of dark chocolate?

Absolutely! Milk chocolate will make the brownies a bit sweeter and creamier, which some might prefer. Just be mindful that it can affect the overall richness slightly.

Do I need espresso powder in this recipe?

While espresso powder is optional, it really enhances and deepens the chocolate flavor without making the brownies taste like coffee, so I highly recommend including it if you have it on hand.

Can I make these gluten-free?

Yes, you can substitute the all-purpose flour with a gluten-free baking blend. Just be sure it’s a one-to-one replacement designed for baking, and double-check your graham crackers are gluten-free as well.

Can I prepare the batter ahead of time?

Yes! You can mix the batter and store it tightly covered in the fridge for up to 24 hours before baking. Just let it come to room temperature before baking for even cooking.

What’s the best way to get evenly toasted marshmallows?

Using the broiler is the simplest method; just watch carefully as marshmallows toast quickly and can burn within seconds. An alternative is to use a kitchen torch for precise control if you prefer.

Final Thoughts

Making this S’mores Brownies Recipe feels like creating a little moment of joy and nostalgia in every batch. The perfect balance between fudgy chocolate, crunchy graham crackers, and toasted marshmallow topping makes these brownies truly unforgettable. I hope you love baking and sharing these as much as I do — go ahead and make a batch, and see how quickly they disappear!