When my boys were younger, we camped almost every weekend and s’mores were a staple on all of our trips! They’re also huge brownie lovers, so combining these two yummy desserts into one delicious treat was a no-brainer. These S’mores Brownies are the perfect combination of gooey chocolate, toasted marshmallows, and crunchy graham crackers—all layered on top of rich, fudgy brownies. The best part? They start with a simple boxed brownie mix, making them an easy and quick dessert for any occasion.
Whether you’re planning a cozy night in, hosting friends around the fire pit, or just craving something sweet and nostalgic, these S’mores Brownies bring all the campfire fun indoors—no flames required!
Ingredients
1 box brownie mix (prepared as directed)
10 oz graham crackers (about 2 packs from a 14.4 oz box)
½ teaspoon pumpkin pie spice (adds a cozy twist)
8 oz mini marshmallows
4 Hershey’s Chocolate bars, broken into bite-size pieces
Other supplies:
Cast iron or nonstick 9×13 baking pan, hand mixer or stand mixer
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Step-by-Step Instructions
Step 1: Preheat the oven
Preheat your oven to 350°F and lightly grease your pan. A cast iron muffin pan works great for individual servings, but you can also use a traditional 9×13 baking dish for classic brownie squares.
Step 2: Prepare and bake the brownies
Prepare your brownie mix according to the package directions. Bake until just about done—remove the pan from the oven with about 5 minutes left on the baking time. This ensures the brownies stay fudgy once you add the toppings.
Step 3: Add graham crackers
Layer graham crackers directly on top of the brownies while they’re still warm. Break larger pieces to fit as needed, creating a base for all that gooey goodness.
Step 4: Add marshmallows and chocolate
Step 5: Add a few more graham cracker pieces
For that rustic, campfire-style look, crumble a few extra graham cracker pieces across the top. It adds texture and makes the dessert look extra inviting.
Step 6: Toast and finish baking
Return the pan to the oven for 5 minutes, or just until the marshmallows start to puff up and turn golden brown. Keep an eye on them—marshmallows toast quickly!
Step 7: Cool slightly and serve
Allow your brownies to cool slightly before slicing. These are best served slightly warm when the marshmallows are soft, the chocolate is melty, and every bite tastes like campfire heaven.
Why You’ll Love These S’mores Brownies
These S’mores Brownies recipe combines everything you love about two classic desserts—brownies and s’mores—into one irresistible treat. You’ll love how easy they are to make with simple pantry staples, how beautifully they bake up with gooey layers, and how they bring back cozy childhood memories of campfires and family nights under the stars.
They’re the perfect dessert for summer bonfires, fall gatherings, or winter movie nights. And since they’re made from boxed brownie mix, you can whip them up in under an hour—no campfire required!
Tips for the Best S’mores Brownies
• Use a cast iron muffin pan for perfectly portioned individual brownies with crispy edges and gooey centers.
• Try lining your pan with parchment paper for easy removal and cleaner slices.
• Add a pinch of sea salt on top before serving for an elevated sweet-and-salty flavor.
• Substitute chocolate chips, peanut butter cups, or dark chocolate chunks for a flavor twist.
• Toast the marshmallows under the broiler for 30 seconds if you want an extra golden finish.
Frequently Asked Questions
Can I make S’mores Brownies ahead of time?
Yes! Bake and cool them completely before covering with foil or storing in an airtight container. Reheat for 10–15 seconds in the microwave for that fresh-from-the-campfire taste.
Do I have to use boxed brownie mix?
Not at all! You can use your favorite homemade brownie recipe. The key is to bake until almost done before adding your toppings.
Can I use large marshmallows instead of mini?
Yes, just slice them in half before layering. Mini marshmallows melt more evenly, but either works great.
Can I make these gluten-free?
Absolutely. Use a gluten-free brownie mix and gluten-free graham crackers for an equally delicious treat.
These easy, gooey, chocolatey S’mores Brownies are sure to be a hit with family and friends. They’re the perfect dessert to enjoy year-round and the best way to bring a little taste of the outdoors inside.
If you make this recipe, I’d love to see it! Follow along on social media @returninggrace and tag me or leave a comment to share how yours turned out.
Ingredients
- 1 box brownie mix prepared as directed
- 10 oz graham crackers 2 packs in a 14.4 oz box
- 8 oz mini marshmallows
- 4 Hershey’s Chocolate bars broken into bite size pieces.
Instructions
- Step 1: Preheat your oven to 350°F and lightly grease your pan. A cast iron muffin pan works great for individual servings, but you can also use a traditional 9×13 baking dish for classic brownie squares.
- Step 2: Prepare your brownie mix according to the package directions. Bake until just about done—remove the pan from the oven with about 5 minutes left on the baking time. This ensures the brownies stay fudgy once you add the toppings.
- Step 3: Layer graham crackers directly on top of the brownies while they’re still warm. Break larger pieces to fit as needed, creating a base for all that gooey goodness.
- Step 4: Sprinkle mini marshmallows evenly over the graham crackers, followed by the chocolate bar pieces. Don’t be shy—extra chocolate always makes s’mores better!
- Step 5: For that rustic, campfire-style look, crumble a few extra graham cracker pieces across the top. It adds texture and makes the dessert look extra inviting.
- Step 6: Return the pan to the oven for 5 minutes, or just until the marshmallows start to puff up and turn golden brown. Keep an eye on them—marshmallows toast quickly!
- Step 7: Allow your brownies to cool slightly before slicing. These are best served slightly warm when the marshmallows are soft, the chocolate is melty, and every bite tastes like campfire heaven.
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Meet Stephanie
Hi, I’m Stephanie—a lifelong creative, homebody at heart, and the hands behind Returning Grace. I believe home should feel like your favorite place, and I’m passionate about helping you create spaces filled with warmth, character, and charm. From simple DIYs and seasonal crafts to cozy recipes and vintage-inspired decor, I share approachable ideas to make your home feel beautifully lived in. I love thrifting, styling old finds in fresh ways, and documenting our home remodeling adventures along the way.
I’m honored to have served as the 2024 American Farmhouse Style Brand Ambassador and to share my love for cottage farmhouse living with a community that values creativity, comfort, and meaningful design.
