Fudgy, gooey, and loaded with nostalgic flavor, these S’mores Brownies combine the best parts of campfire treats and classic chocolate brownies. With a buttery graham cracker crust, rich chocolate brownie center, and toasted marshmallow topping, this dessert is pure indulgence. Whether you’re hosting a party, baking with kids, or just treating yourself, these brownies bring the taste of summer to any season.
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Why You’ll Love This Recipe
Three Layers of Deliciousness – Crunchy crust, fudgy brownie, and gooey marshmallows.
No Campfire Needed – Get all the classic s’mores flavor right from your oven.
Easy to Make – Simple ingredients and clear steps.
Perfect for Sharing – A fun and crowd-pleasing dessert.
Customizable – Add chocolate chips, peanut butter, or caramel for a twist.
Ingredients You’ll Need
For the Graham Cracker Crust:
1½ cups graham cracker crumbs (about 10 full crackers)
¼ cup granulated sugar
½ cup (1 stick) unsalted butter, melted
For the Brownie Layer:
½ cup (1 stick) unsalted butter
1 cup granulated sugar
2 large eggs
1 tsp vanilla extract
⅓ cup unsweetened cocoa powder
½ cup all-purpose flour
¼ tsp salt
½ tsp baking powder
For the Marshmallow Topping:
2 cups mini marshmallows
Optional: ½ cup chocolate chips or chunks for extra gooeyness
Tools You’ll Need
9×9-inch baking pan
Mixing bowls
Whisk or electric mixer
Spatula
Measuring cups and spoons
Parchment paper (optional for easy removal)
Step-by-Step Instructions
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C).
Grease your baking pan or line it with parchment paper for easy removal.
Step 2: Make the Graham Cracker Crust
In a bowl, mix graham cracker crumbs, sugar, and melted butter until well combined.
Press the mixture firmly into the bottom of the prepared pan to form a crust.
Bake for 8–10 minutes, then remove and set aside.
Step 3: Prepare the Brownie Batter
In a large bowl, melt butter (microwave or stovetop).
Stir in sugar, eggs, and vanilla extract until smooth.
Add cocoa powder, flour, salt, and baking powder. Mix just until combined—don’t overmix.
Fold in chocolate chips if using.
Step 4: Assemble and Bake
Pour the brownie batter over the baked graham crust and spread evenly.
Bake for 20–25 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs (not wet batter).
Step 5: Add Marshmallows
Remove brownies from the oven and quickly top with mini marshmallows, spreading them out to cover the entire surface.
Return to the oven and bake for an additional 5–7 minutes, or until the marshmallows are golden and puffy.
Optional: For extra toastiness, broil for 30–60 seconds—watch closely!
Step 6: Cool and Slice
Let the brownies cool completely before slicing.
For cleaner cuts, chill the pan in the fridge for 20–30 minutes before slicing with a sharp knife.

Tips for the Best S’mores Brownies
Use Parchment Paper – Makes lifting and cutting easier.
Don’t Overbake – Brownies continue cooking as they cool, so pull them when the center is just set.
Chill to Cut – Chilling helps marshmallows set for neater slices.
Add a Twist – Swirl in peanut butter, sprinkle with sea salt, or drizzle with chocolate sauce.
Go Big on Marshmallows – Use marshmallow fluff or large marshmallows cut in half if preferred.
Serving Suggestions
Party Platters – Perfect for summer BBQs, birthday parties, or potlucks.
Afternoon Treat – Enjoy with a tall glass of milk or iced coffee.
Dessert Boards – Pair with fruit, cookies, and candies for a s’mores-themed tray.
Ice Cream Topping – Serve warm brownies under a scoop of vanilla ice cream.
Gift-Worthy – Wrap slices in parchment and ribbon for a sweet, homemade gift.
How to Store & Reheat
Storing:
Room Temperature: Store in an airtight container for up to 3 days.
Refrigerate: Store for up to 5 days to keep marshmallows fresh.
Freezing:
Freeze uncut brownies or individual slices for up to 2 months.
Wrap tightly and thaw at room temperature before serving.
Reheating:
Microwave: Warm individual brownies for 10–15 seconds for melty goodness.
Oven: Reheat slices at 300°F for 5–7 minutes.
Frequently Asked Questions
- Can I use a boxed brownie mix?
Absolutely! Make the crust, then prepare and bake the boxed mix on top as directed. - Can I make this in a 9×13 pan?
Yes, just double the ingredients and adjust baking time as needed. - Can I use large marshmallows?
Yes—cut them in half and arrange cut-side down for even melting. - Can I use marshmallow fluff instead?
Sure! Spread on top after baking and broil briefly for a toasted finish. - Are these too sweet?
They’re rich and indulgent—perfect for a sweet tooth! You can reduce sugar slightly in the brownie layer for a less sweet version.
Final Thoughts
S’mores Brownies are everything you love about a campfire treat, baked into a fudgy, golden-topped dessert bar. With layers of crunchy graham cracker, rich chocolate, and gooey marshmallows, it’s a recipe that always brings smiles. Whether you’re baking for a special occasion or just because, this one’s a guaranteed winner.
Try it out, and don’t forget to share your gooey masterpiece! Tag your photos and leave a review—I’d love to see how they turned out.
Preparation Time: 15 minutes
Cooking Time: 30–35 minutes
Cuisine: American
Nutritional Information (Per Serving – yields 12):
Calories: 310 | Protein: 3g | Carbohydrates: 40g | Fat: 16g | Fiber: 1g | Sodium: 130mg

S’mores Brownies
- Total Time: 0 hours
Description
Fudgy, gooey, and loaded with nostalgic flavor, these S’mores Brownies combine the best parts of campfire treats and classic chocolate brownies. With a buttery graham cracker crust, rich chocolate brownie center, and toasted marshmallow topping, this dessert is pure indulgence. Whether you’re hosting a party, baking with kids, or just treating yourself, these brownies bring the taste of summer to any season.
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Ingredients
For the Graham Cracker Crust:
1½ cups graham cracker crumbs (about 10 full crackers)
¼ cup granulated sugar
½ cup (1 stick) unsalted butter, melted
For the Brownie Layer:
½ cup (1 stick) unsalted butter
1 cup granulated sugar
2 large eggs
1 tsp vanilla extract
⅓ cup unsweetened cocoa powder
½ cup all-purpose flour
¼ tsp salt
½ tsp baking powder
For the Marshmallow Topping:
2 cups mini marshmallows
Optional: ½ cup chocolate chips or chunks for extra gooeyness
Instructions
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C).
Grease your baking pan or line it with parchment paper for easy removal.
Step 2: Make the Graham Cracker Crust
In a bowl, mix graham cracker crumbs, sugar, and melted butter until well combined.
Press the mixture firmly into the bottom of the prepared pan to form a crust.
Bake for 8–10 minutes, then remove and set aside.
Step 3: Prepare the Brownie Batter
In a large bowl, melt butter (microwave or stovetop).
Stir in sugar, eggs, and vanilla extract until smooth.
Add cocoa powder, flour, salt, and baking powder. Mix just until combined—don’t overmix.
Fold in chocolate chips if using.
Step 4: Assemble and Bake
Pour the brownie batter over the baked graham crust and spread evenly.
Bake for 20–25 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs (not wet batter).
Step 5: Add Marshmallows
Remove brownies from the oven and quickly top with mini marshmallows, spreading them out to cover the entire surface.
Return to the oven and bake for an additional 5–7 minutes, or until the marshmallows are golden and puffy.
Optional: For extra toastiness, broil for 30–60 seconds—watch closely!
Step 6: Cool and Slice
Let the brownies cool completely before slicing.
For cleaner cuts, chill the pan in the fridge for 20–30 minutes before slicing with a sharp knife.
Notes
Use Parchment Paper – Makes lifting and cutting easier.
Don’t Overbake – Brownies continue cooking as they cool, so pull them when the center is just set.
Chill to Cut – Chilling helps marshmallows set for neater slices.
Add a Twist – Swirl in peanut butter, sprinkle with sea salt, or drizzle with chocolate sauce.
Go Big on Marshmallows – Use marshmallow fluff or large marshmallows cut in half if preferred.
- Prep Time: 15 minutes
- Cook Time: 30–35 minutes
- Cuisine: American