Rich, gooey, and loaded with campfire nostalgia, S’mores Brownies combine two all-time favorites into one decadent treat. With a buttery graham cracker crust, fudgy brownie center, and a toasted marshmallow topping, these brownies are a slice of summer fun—no firepit required. Perfect for parties, bake sales, or cozy nights in, they’re guaranteed to satisfy your sweet tooth.
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Why You’ll Love This Recipe
Triple-Layer Goodness – Crunchy crust, chewy brownie, and gooey marshmallows in every bite.
Ultimate Comfort – Tastes just like classic s’mores with a rich twist.
Party-Perfect – Eye-catching, crowd-pleasing, and easy to transport.
Easy to Make – Simple ingredients and minimal prep time.
Customizable – Add chocolate chips, peanut butter, or caramel for fun variations.
Ingredients You’ll Need
For the Graham Cracker Crust:
- 1½ cups graham cracker crumbs (about 10 full crackers)
- ¼ cup granulated sugar
- 6 tbsp 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
- ¼ tsp baking powder
For the Topping:
- 2 cups mini marshmallows
- ½ cup milk chocolate chips or chopped chocolate bar
Tools You’ll Need
- 8×8 or 9×9-inch baking pan
- Mixing bowls
- Hand or stand mixer (optional)
- Whisk and spatula
- Measuring cups and spoons
- Parchment paper
- Broiler (for marshmallow toasting)
Step-by-Step Instructions
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Line your baking pan with parchment paper or grease it lightly.
Step 2: Make the Graham Cracker Crust
In a medium bowl, combine graham cracker crumbs, sugar, and melted butter. Stir until the mixture resembles wet sand.
Press the mixture evenly into the bottom of the prepared pan. Use the bottom of a glass or measuring cup to pack it down firmly.
Bake for 8 minutes. Remove from oven and set aside while you prepare the brownie layer.
Step 3: Prepare the Brownie Batter
In a saucepan or microwave-safe bowl, melt the butter. Whisk in the sugar, eggs, and vanilla until smooth.
Add cocoa powder, flour, salt, and baking powder. Stir until fully combined and no streaks of flour remain.
Pour the brownie batter over the baked crust and spread evenly with a spatula.
Step 4: Bake the Brownies
Bake for 20–25 minutes, or until a toothpick inserted into the center comes out with moist crumbs (not wet batter). Remove from oven but leave it on.
Step 5: Add the S’mores Topping
Immediately sprinkle mini marshmallows and chocolate chips over the top of the hot brownies.
Return the pan to the oven and broil on high for 1–2 minutes until marshmallows are golden and toasted. Watch very carefully—they can burn quickly!
Step 6: Cool and Slice
Let brownies cool completely in the pan. For clean cuts, chill in the fridge for 30 minutes before slicing. Use a sharp knife and clean between cuts.
Tips for the Best S’mores Brownies
Pack the Crust – Press firmly to prevent it from crumbling when sliced.
Don’t Overbake – Brownies should be fudgy; check a few minutes early.
Broil Carefully – Keep an eye on the marshmallows—they toast fast.
Cool Before Cutting – Helps set the layers for clean, beautiful slices.
Use Parchment Paper – Makes lifting and cutting so much easier.
Serving Suggestions
Warm with Ice Cream – A scoop of vanilla or chocolate ice cream makes it even more decadent.
With Hot Cocoa – The perfect treat for chilly nights.
At Parties – Cut into mini squares for a handheld dessert.
As a Gift – Package in a cute box or wrap for bake sale or holiday gifts.
Outdoor Vibes – Serve with grilled burgers and lemonade for a summer BBQ finish.
How to Store & Freeze
Storing:
- Room Temperature: Keep in an airtight container for up to 3 days.
- Refrigerate: Lasts up to 5 days chilled—just bring to room temp before serving.
Freezing:
- Wrap individually or freeze the whole pan (un-sliced) tightly in plastic and foil.
- Freeze for up to 2 months. Thaw overnight in the fridge and toast slightly before serving if desired.
Frequently Asked Questions
1. Can I use boxed brownie mix?
Yes! Prepare the crust as directed and use your favorite boxed mix for the brownie layer to save time.
2. What if I don’t have mini marshmallows?
You can snip large marshmallows in half or use marshmallow fluff, though fluff won’t toast the same.
3. Can I add peanut butter?
Absolutely! Swirl ¼ cup of peanut butter into the brownie batter before baking for a delicious twist.
4. How do I keep the marshmallows from getting too hard?
Let the brownies cool completely at room temp, then cover them. Avoid over-broiling, which can dry them out.
5. Can I double the recipe?
Yes! Use a 9×13-inch pan and adjust bake time to 30–35 minutes.
Final Thoughts
S’mores Brownies are the ultimate treat for dessert lovers who want it all—chocolate, marshmallow, and crunch in one irresistible bar. Whether you’re baking for a crowd or indulging solo, these gooey, golden-topped brownies bring all the joy of a campfire without leaving your kitchen.
Try them once and they’re sure to become your new go-to treat. Don’t forget to share your variations and reviews in the comments below!
Preparation Time: 15 minutes
Cooking Time: 25 minutes + broiling
Cuisine: American
Nutritional Information (Per Serving):
Calories: 320 | Protein: 3g | Carbohydrates: 38g | Fat: 18g | Fiber: 2g | Sodium: 150mg

S’mores Brownies
- Total Time: 0 hours
Description
Rich, gooey, and loaded with campfire nostalgia, S’mores Brownies combine two all-time favorites into one decadent treat. With a buttery graham cracker crust, fudgy brownie center, and a toasted marshmallow topping, these brownies are a slice of summer fun—no firepit required. Perfect for parties, bake sales, or cozy nights in, they’re guaranteed to satisfy your sweet tooth.
Want recipes like this delivered straight to your inbox? Subscribe now to get the latest indulgent desserts and creative mashups you’ll love.
Ingredients
For the Graham Cracker Crust:
-
1½ cups graham cracker crumbs (about 10 full crackers)
-
¼ cup granulated sugar
-
6 tbsp 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
-
¼ tsp baking powder
For the Topping:
-
2 cups mini marshmallows
-
½ cup milk chocolate chips or chopped chocolate bar
Instructions
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Line your baking pan with parchment paper or grease it lightly.
Step 2: Make the Graham Cracker Crust
In a medium bowl, combine graham cracker crumbs, sugar, and melted butter. Stir until the mixture resembles wet sand.
Press the mixture evenly into the bottom of the prepared pan. Use the bottom of a glass or measuring cup to pack it down firmly.
Bake for 8 minutes. Remove from oven and set aside while you prepare the brownie layer.
Step 3: Prepare the Brownie Batter
In a saucepan or microwave-safe bowl, melt the butter. Whisk in the sugar, eggs, and vanilla until smooth.
Add cocoa powder, flour, salt, and baking powder. Stir until fully combined and no streaks of flour remain.
Pour the brownie batter over the baked crust and spread evenly with a spatula.
Step 4: Bake the Brownies
Bake for 20–25 minutes, or until a toothpick inserted into the center comes out with moist crumbs (not wet batter). Remove from oven but leave it on.
Step 5: Add the S’mores Topping
Immediately sprinkle mini marshmallows and chocolate chips over the top of the hot brownies.
Return the pan to the oven and broil on high for 1–2 minutes until marshmallows are golden and toasted. Watch very carefully—they can burn quickly!
Step 6: Cool and Slice
Let brownies cool completely in the pan. For clean cuts, chill in the fridge for 30 minutes before slicing. Use a sharp knife and clean between cuts.
Notes
Pack the Crust – Press firmly to prevent it from crumbling when sliced.
Don’t Overbake – Brownies should be fudgy; check a few minutes early.
Broil Carefully – Keep an eye on the marshmallows—they toast fast.
Cool Before Cutting – Helps set the layers for clean, beautiful slices.
Use Parchment Paper – Makes lifting and cutting so much easier.
- Prep Time: 15 minutes
- Cook Time: 25 minutes + broiling
- Cuisine: American