S’mores Brownies Recipe
If you’ve ever wished you could bring the nostalgia of campfire treats right into your kitchen, these S’mores Brownies are your answer! With decadent layers of fudgy brownie, buttery graham cracker pieces, gooey mini marshmallows, and pockets of melty milk chocolate, each bite is pure joy. Whether you grew up toasting s’mores over a fire or you’re simply a fan of irresistible desserts, this recipe brings all the flavors you love into one easy, crowd-pleasing pan. Perfect for gatherings, bake sales, or a cozy night in, S’mores Brownies are proof that you don’t need a campfire to create unforgettable dessert memories.

Ingredients You’ll Need
Simple, pantry-friendly basics combine to create some serious magic in this treat. Each ingredient plays an important role, from creating a fudgy, rich base to nailing those classic s’mores flavors and textures you know and love.
- Brownie Mix (18.3 oz family size, for 13×9-inch pan): Go for your favorite brand—this shortcut delivers rich, chocolatey goodness as a perfect foundation.
- Large Eggs (2): Using the amount listed for “cakey” brownies lends lift and just the right amount of structure.
- Vegetable Oil (⅓ cup): Keeps the brownies extra moist and tender—don’t skimp!
- Water (⅓ cup): Brings the batter together and guarantees a fudge-like texture.
- Graham Crackers (6, cut or broken into bite-size pieces): Adds that signature crunch and the unmistakable taste of classic s’mores.
- Miniature Marshmallows (2 cups): Toast as they bake for gooey, golden tops.
- Hershey’s Milk Chocolate Bars (12 snack-size, broken into squares): Pockets of melty chocolate are what s’mores dreams are made of.
How to Make S’mores Brownies
Step 1: Mix the Brownie Base
Start by preheating your oven to 350 degrees Fahrenheit. In a large bowl, combine the brownie mix, eggs, vegetable oil, and water just as instructed on the box for the “cakey” version of brownies—the fluffy texture here is ideal to hold up all the glorious toppings. Stir until the batter is smooth and glossy, then pour it into a greased 13×9-inch baking pan, making sure to spread it evenly into every corner.
Step 2: Bake to Almost-Doneness
Pop the pan into your preheated oven and bake for 20 minutes. The goal here isn’t to finish baking the brownies completely—they should be just about done, meaning a toothpick poked into the center comes out with a few moist crumbs or is slightly wet. This ensures S’mores Brownies stay perfectly fudgy even after they go back in the oven with the toppings.
Step 3: Top with S’mores Goodness
As soon as you take the pan out, immediately scatter the broken graham cracker pieces and mini marshmallows over the top. Next, gently nestle the milk chocolate squares into the marshmallow and cracker layer. The residual heat will start to soften everything, prepping for that gloriously gooey finish.
Step 4: Finish Baking for Gooey Perfection
Return the pan to the oven for about 5 minutes. This is where the magic happens! The marshmallows should puff up and turn golden, while the chocolate gets wonderfully melty—think of this step as a kitchen campfire moment for your S’mores Brownies.
Step 5: Slice and Enjoy
If you just can’t wait, spray a sharp knife with cooking spray and cut the brownies while they’re still warm, wiping and re-spraying between slices to avoid sticky marshmallow mess. Or, if you prefer clean slices and slightly chewier texture, let everything cool completely before cutting into 20 even pieces (rows of 5 by 4). Either way, you’re in for a treat!
How to Serve S’mores Brownies

Garnishes
A little flourish goes a long way with S’mores Brownies. For that authentic s’mores look, pop a few extra marshmallows on top, then toast them carefully with a kitchen torch for that irresistible golden finish. A drizzle of melted chocolate or a sprinkle of crushed graham crackers adds a bakery-worthy touch.
Side Dishes
Turn S’mores Brownies into a full-on dessert celebration! These pair deliciously with vanilla ice cream, fresh strawberries, or even a mug of hot chocolate. If you’re serving a crowd, offer a light, zesty fruit salad to balance out all that rich chocolate goodness.
Creative Ways to Present
Why not lean into the campfire vibe? Serve slices on small wooden boards or parchment squares for a rustic feel. If you’re making these for a party, cut them into mini squares and skewer with cocktail sticks. You can even top individual servings with a toasted marshmallow for an ultra-festive flair!
Make Ahead and Storage
Storing Leftovers
Keep your S’mores Brownies fresh by covering the pan tightly with plastic wrap or foil and storing at room temperature for up to three days. Just a heads up—the graham crackers will soften over time, but that only makes them even more melt-in-your-mouth, especially with gooey marshmallow on top!
Freezing
Need to stash some for later? Cut fully cooled brownies into squares, wrap each tightly in plastic wrap, and store in a freezer bag. S’mores Brownies freeze beautifully for up to 2 months—just be sure to thaw at room temperature before serving for best texture.
Reheating
To capture that freshly-baked, gooey experience, pop individual S’mores Brownies in the microwave for 10-15 seconds. The marshmallows get soft, the chocolate melts again, and suddenly you’re right back at that first perfect bite!
S’mores Brownies FAQs
Can I use homemade brownie batter instead of a mix?
Absolutely! If you have a tried-and-true brownie recipe you love, use enough batter for a 13×9-inch pan. Just follow the rest of the instructions for the s’mores toppings and bake time.
How do I keep the marshmallows from getting too brown?
Keep a close eye on your brownies during the final five minutes—every oven is a little different. If you prefer lightly toasted marshmallows, cover loosely with foil towards the end or reduce the baking time by a minute or two.
Can S’mores Brownies be made gluten-free?
Yes! There are great gluten-free brownie mixes and graham crackers available. Just substitute equal amounts of each and prepare as usual. Always double-check your labels if serving to those with allergies.
What’s the best way to cut gooey brownies neatly?
Spray a sharp knife with nonstick cooking spray before each slice or wipe it between cuts. Waiting until your S’mores Brownies cool completely also helps keep the slices sharp and tidy.
Can I make S’mores Brownies in advance for a party?
Definitely! These brownies hold up beautifully overnight. Bake and cool them the day before, then cover tightly. Just wait to slice until you’re ready to serve for the freshest presentation.
Final Thoughts
If you’re searching for a dessert that delivers big smiles and pure comfort, S’mores Brownies are the answer every single time. Don’t be surprised if these become your new go-to for celebrations both big and small. Give them a try and prepare to fall in love with every bite!
PrintS’mores Brownies Recipe
Indulge in the heavenly combination of gooey marshmallows, rich chocolate, and crunchy graham crackers with these decadent S’mores Brownies. Perfect for satisfying your sweet tooth or impressing guests at your next gathering.
- Prep Time: 10 minutes
- Cook Time: 25 minutes
- Total Time: 35 minutes
- Yield: 20 brownies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Brownie Mix:
- 18.3 oz box family size brownie mix (for a 13×9″ pan)
- 2 large eggs (or as written on box for “cakey” brownies)
- ⅓ cup vegetable oil (or as written on box)
- ⅓ cup water (or as written on box)
Additions:
- 6 graham crackers (cut or broken into bite-size pieces)
- 2 cups miniature marshmallows
- 12 snack-size Hershey’s Milk Chocolate Bars (broken into squares)
Instructions
- Preheat oven: Preheat oven to 350 degrees Fahrenheit. Prepare brownie mix according to package instructions for ‘cakey’ brownies. Pour into greased 13×9-inch pan.
- Bake: Bake at 350˚F for 20 minutes until slightly undercooked. Top with graham crackers, marshmallows, and chocolate squares.
- Finish baking: Return to oven for 5 minutes until marshmallows puff up and chocolate melts.
- Cut: Slice while warm with a sprayed knife or cool completely before cutting into squares.
- Store: Store covered for up to 3 days, noting that graham crackers will soften over time.
Notes
- For extra crunch, you can toast the marshmallows under the broiler for a few seconds after baking.
- Experiment with different chocolate varieties like dark chocolate or flavored bars for a unique twist.
- Serve with a scoop of vanilla ice cream for a delicious dessert pairing.
Nutrition
- Serving Size: 1 brownie
- Calories: 250
- Sugar: 20g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 20mg
Keywords: S’mores Brownies, Dessert Recipe, Chocolate, Marshmallows, Graham Crackers