There are some flavors that instantly transport you back to childhood, and for me, s'mores are at the very top of that list. I can still vividly recall those summer evenings, gathered around a crackling campfire, the smoky scent filling the air, and the anticipation of that perfectly toasted marshmallow melting between graham crackers and chocolate. It was pure magic. As much as I adore those classic campfire moments, sometimes the weather doesn't cooperate, or I simply crave that nostalgic taste without the whole outdoor setup. That's where these incredible S'mores Brownies come in. They capture all the gooey, chocolatey, crunchy goodness of the original in a decadent, easy-to-make bar that’s perfect for any occasion, rain or shine. Get ready to bring the campfire right into your kitchen!
Why These S'mores Brownies are a Must-Try
- All the Classic Flavors, No Campfire Required: Experience the iconic trio of rich chocolate, crunchy graham crackers, and toasted marshmallow without stepping foot outside. These S'mores Brownies deliver on every nostalgic note.
- Irresistibly Gooey & Fudgy: We're talking about a brownie base that's deeply chocolatey and incredibly fudgy, topped with a luscious layer of melty marshmallow that gets beautifully golden brown, just like a campfire s'more.
- Easy to Make, Impressive to Serve: Despite their show-stopping appearance, these S'mores Brownies are surprisingly straightforward to prepare. They're perfect for potlucks, parties, or simply a cozy night in, always garnering rave reviews.
- Customizable Fun: While the classic is perfect, these S'mores Brownies offer plenty of room for creative twists, from adding nuts to different chocolate types (we’ll get to that!).
Key Ingredient Notes
While the magic of S'mores Brownies comes from their combined flavors, a few key ingredients truly elevate this dessert from good to absolutely unforgettable. Let's dive into what makes them sing.
Good Quality Cocoa Powder
For the brownie base, don't skimp on your cocoa powder. Since chocolate is the star, a high-quality unsweetened cocoa powder will make a world of difference in the depth of flavor. I prefer a Dutch-processed cocoa powder for a darker, richer, and less acidic chocolate taste, which pairs beautifully with the sweetness of the marshmallow. It creates that deep, almost obsidian brownie color and intense chocolate flavor that makes these S'mores Brownies truly stand out. If you’re a chocolate lover like me, you’ll appreciate the difference!
Fresh Marshmallows
This might seem obvious, but using fresh, soft marshmallows is crucial for that perfect gooey, stretchy topping. Stale marshmallows will melt unevenly and might not achieve that desirable golden-brown crust. Large marshmallows are traditional for s'mores, but mini marshmallows work just as well and spread more evenly across the top of your S'mores Brownies. If you can find gourmet marshmallows, even better – their texture and slight vanilla notes can add an extra layer of deliciousness.
Graham Cracker Crumbs (or whole crackers)
The graham cracker layer provides that essential crunch and honeyed flavor that defines a s'more. You can buy pre-crushed graham cracker crumbs for convenience, or crush your own whole graham crackers. Crushing your own allows you to control the texture – some people like finer crumbs, while others prefer a bit more bite with slightly larger pieces. Just make sure they're finely enough crushed to form a cohesive base that holds together when mixed with melted butter. This crunchy base is what truly anchors the S'mores Brownies to their campfire inspiration.

Step-by-Step Guide with Pro Tips
Creating the perfect batch of S'mores Brownies is a delightful process. Here’s how we’ll achieve that fudgy, gooey, and crunchy perfection.
The Graham Cracker Crust
The foundation of our S'mores Brownies begins with a classic graham cracker crust. This provides a delightful textural contrast to the fudgy brownie and melty marshmallow.
The Fudgy Brownie Layer
This is where the serious chocolate magic happens. We want a brownie that's rich, dense, and deeply chocolatey, capable of holding its own against the sweet toppings.
The Marshmallow Topping
The grand finale! This is where our S'mores Brownies truly come to life, transforming into that iconic campfire treat.
Variations & Serving Suggestions
While classic S'mores Brownies are perfection in a pan, there are always ways to get creative! Here are a few ideas to switch things up:
- Spiced Graham Crust: Add a pinch of cinnamon or nutmeg to your graham cracker crust mixture for a warmer, spicier note.
- Chocolate Chip Brownie: Fold in a cup of chocolate chips (milk, dark, or even white chocolate!) into your brownie batter for an extra chocolatey punch. For another decadent chocolate treat, you might enjoy making a Decadent Chocolate Hazelnut Tart.
- Nutty S'mores: Sprinkle a layer of chopped pecans or walnuts over the brownie batter before baking, or even toss them into the batter for added crunch and flavor.
- Salted Caramel Drizzle: Once the S'mores Brownies have cooled slightly, drizzle them with a bit of homemade or store-bought salted caramel sauce for an extra layer of indulgence.
- Peanut Butter Swirl: Swirl a few tablespoons of melted peanut butter into the brownie batter before baking, or drizzle it over the marshmallow layer after it comes out of the oven.
- Serving Suggestions: Serve these S'mores Brownies slightly warm for the ultimate gooey experience, perhaps with a scoop of vanilla bean ice cream on the side. They’re also fantastic at room temperature. For easy transport or storing leftovers, consider using Basics Glass Food Storage containers to keep them fresh and delicious. If you're looking for another comforting dessert for your storage containers, our Fudgy Brown Butter Pumpkin Blondies are always a hit!
Nutrition Information
| Nutrient | Amount Per Serving |
|---|---|
| Calories | 350 kcal |
| Carbohydrate Content | 55 g |
| Cholesterol Content | 50 mg |
| Fat Content | 15 g |
| Fiber Content | 3 g |
| Protein Content | 4 g |
| Saturated Fat Content | 9 g |
| Serving Size | 1 brownie square |
| Sodium Content | 180 mg |
| Sugar Content | 40 g |
| Trans Fat Content | 0 g |
| Unsaturated Fat Content | 5 g |
These S'mores Brownies are more than just a dessert; they're a little slice of joy, a reminder of simpler times, and a guaranteed crowd-pleaser. Whether you're baking them for a special occasion or just to satisfy a craving for something sweet and nostalgic, they deliver every single time. The fudgy brownie, the crunchy graham cracker, and that perfectly toasted, gooey marshmallow topping create a symphony of textures and flavors that's simply irresistible. So, go ahead, whip up a batch of these S'mores Brownies and let the campfire magic fill your home!
FAQs
Can I make S'mores Brownies ahead of time?
Yes, S'mores Brownies are excellent for making ahead! You can bake the entire batch, let them cool completely, then store them in an airtight container at room temperature for up to 3-4 days. They are still delicious, though the marshmallows might lose a bit of their initial gooeyness. You can warm them slightly in the microwave for a few seconds to bring back some of the meltiness.
How do I get clean cuts for my S'mores Brownies?
For perfectly clean cuts, the key is patience! Allow your S'mores Brownies to cool completely (several hours or even overnight) before slicing. Using a sharp, thin knife dipped in hot water and wiped dry between each cut will also help prevent sticking and ensure neat squares. A little oil on the knife can also work wonders.
What kind of marshmallows are best for S'mores Brownies?
Large marshmallows are traditional for s'mores, and cutting them in half works well for these brownies. Mini marshmallows are also a great option as they spread more evenly and melt quickly. The most important thing is to use fresh, soft marshmallows, as stale ones won't melt as nicely. Avoid marshmallow fluff for the topping as it won't toast in the same way.
My marshmallows burned quickly! What went wrong?
Marshmallows can go from perfectly golden to burnt very fast, especially under a broiler. The best way to prevent this is to keep a very close eye on them during the final baking stage or when broiling. If using the broiler, stand by the oven and remove them as soon as they reach your desired level of toastiness u2013 usually within 1-2 minutes. Make sure your oven rack isn't too close to the broiler element.
Ultimate Gooey S'mores Brownies
Indulge in the ultimate S'mores Brownies: a rich, fudgy chocolate brownie base, topped with a crunchy graham cracker layer, and finished with perfectly toasted, gooey marshmallows. All the campfire magic, no fire needed!
- Total Time: 50 minutes
- Yield: 16 brownies 1x
Ingredients
1½ cups (180g) all-purpose flour
¾ cup (65g) unsweetened cocoa powder (Dutch-processed preferred)
½ teaspoon baking powder
½ teaspoon salt
1 cup (226g) unsalted butter, melted
2 cups (400g) granulated sugar
4 large eggs
2 teaspoons vanilla extract
1½ cups (150g) graham cracker crumbs (about 10-12 full sheets)
¼ cup (56g) unsalted butter, melted (for crust)
10 oz (approx. 4 cups) large marshmallows, halved, or mini marshmallows
Instructions
Step 1: Preheat your oven to 350°F (175°C). Line a 9x13 inch baking pan with parchment paper, leaving an overhang on the sides to easily lift the S'mores Brownies out later. Lightly grease the parchment paper.
Step 2: In a medium bowl, whisk together the graham cracker crumbs and ¼ cup melted butter until well combined. Press this mixture evenly into the bottom of the prepared baking pan. Bake for 8-10 minutes, until lightly golden. Remove from oven and let cool slightly while you prepare the brownie batter.
Step 3: In a large bowl, whisk together the 1½ cups flour, cocoa powder, baking powder, and salt. Set aside.
Step 4: In another large bowl, combine the 1 cup melted butter and granulated sugar. Whisk until smooth. Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
Step 5: Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix the brownie batter; a few streaks of flour are okay.
Step 6: Pour the brownie batter evenly over the pre-baked graham cracker crust in the pan. Spread it gently to cover the entire surface.
Step 7: Bake for 22-25 minutes, or until the edges are set and a toothpick inserted into the center comes out with moist crumbs, but not wet batter. The brownies will not be fully baked yet. Remove from the oven.
Step 8: Evenly distribute the marshmallows over the top of the warm, partially baked brownie layer. If using large marshmallows, cut them in half and place them cut-side down for better coverage.
Step 9: Return the pan to the oven and bake for another 3-5 minutes, or until the marshmallows are puffed up and lightly golden brown. Keep a close eye on them as marshmallows can burn quickly. For a more toasted top, you can briefly place them under the broiler for 1-2 minutes, watching constantly.
Step 10: Once the marshmallows are perfectly toasted, remove the S'mores Brownies from the oven. Let them cool completely in the pan on a wire rack before lifting out with the parchment paper and cutting into squares. This allows the marshmallows to set, making them easier to cut cleanly. Enjoy!
Notes
For the best results, allow the S'mores Brownies to cool completely before cutting. This ensures clean slices and allows the marshmallow layer to set perfectly. Store leftovers in an airtight container at room temperature for up to 3-4 days.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Desserts & Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie square
- Calories: 350 kcal
- Sugar: 40 g
- Sodium: 180 mg
- Fat: 15 g
- Saturated Fat: 9 g
- Unsaturated Fat: 5 g
- Trans Fat: 0 g
- Carbohydrates: 55 g
- Fiber: 3 g
- Protein: 4 g
- Cholesterol: 50 mg
