This delightful dessert combines two beloved treats into one amazing experience. The smores brownie offers a fudgy base, a layer of melted marshmallows, and a hint of graham cracker for the perfect bite.

Imagine the classic taste of s’mores transformed into a rich, decadent brownie. This recipe is a guaranteed crowd-pleaser, perfect for parties, potlucks, or a cozy night in. It’s easy to make and delivers that irresistible combination of chocolate, marshmallow, and graham cracker.
The best s’mores brownie recipe starts with a great brownie base. The addition of marshmallows and graham crackers brings a campfire classic into your kitchen. You’ll love how the gooey marshmallow topping complements the rich, chocolatey brownie.
If you are looking for more incredible dessert ideas, check out some options at Allrecipes.
Ingredients You’ll Need
Gathering the right ingredients is the first step toward making these irresistible s’mores brownie bars. With a few simple components, you can create a dessert that tastes like a campfire and a bakery all in one. Make sure you have all your ingredients measured and ready before you start baking.
For more baking inspiration and tips, you can explore recipes at Serious Eats.
For the Brownie Base
- 1 cup (2 sticks) unsalted butter, melted
- 2 cups granulated sugar
- 4 large eggs
- 1 teaspoon vanilla extract
- ¾ cup unsweetened cocoa powder
- ½ cup all-purpose flour
- ¼ teaspoon salt
For the S’mores Topping
- 3 cups mini marshmallows
- 1 cup graham cracker crumbs
How to Make Smores Brownie

Step 1: Prepare the Brownie Batter
In a large bowl, whisk together the melted butter and sugar until well combined. Next, add the eggs and vanilla extract. Whisk until the mixture is smooth and slightly emulsified.
In a separate bowl, whisk together the cocoa powder, flour, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Don’t overmix the batter; a few lumps are okay.
Step 2: Bake the Brownie Base
Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal. Pour the brownie batter into the prepared pan and spread evenly.
Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs. Be careful not to overbake, as you want the brownies to remain fudgy. This is the foundation for your fudgy s’mores brownies.
Step 3: Add the Marshmallows
Once the brownies are out of the oven, immediately sprinkle the mini marshmallows evenly over the hot brownie surface. This will allow the marshmallows to melt and create a gooey layer.
Return the pan to the oven for about 2-3 minutes, or until the marshmallows are puffed up and lightly golden. Keep a close eye on them to prevent burning. If you want a marshmallow topping for brownies, this is the perfect method.
Step 4: Add the Graham Cracker Crumbs
Remove the brownies from the oven and immediately sprinkle the graham cracker crumbs over the melted marshmallows. The heat will help the crumbs adhere to the marshmallow layer, creating a classic s’mores texture.
Gently press the graham cracker crumbs into the marshmallows to ensure they stick. Let the brownies cool completely in the pan before cutting and serving. This ensures the gooey brownies set properly.
Step 5: Cool and Serve
Allow the brownies to cool completely in the pan before lifting them out using the parchment paper overhang. This cooling period helps the brownies set and makes them easier to cut into neat squares or bars.
Once cooled, cut the brownies into squares or bars and serve. These chocolate s’mores brownies are best enjoyed at room temperature. For a special treat, try serving them with a scoop of vanilla ice cream.
Tips for the Best S’mores Brownies

Choosing the Right Chocolate
The quality of your cocoa powder can significantly impact the flavor of your brownies. Use a high-quality, unsweetened cocoa powder for the best results. It will give you that deep, rich chocolate flavor.
Consider adding a handful of chocolate chips to the brownie batter for extra chocolate intensity. You can use semi-sweet or dark chocolate chips. This will enhance the overall taste of your homemade s’mores brownies.
Getting the Perfect Marshmallow Texture
Avoid overbaking the marshmallows; they should be golden brown and slightly puffed up. Keep a close eye on them during the last few minutes in the oven. This will prevent them from burning.
If you prefer a more even marshmallow layer, you can use a kitchen torch to toast the marshmallows after removing the brownies from the oven. This creates a beautiful, caramelized finish. For a variation, you could even try a s’mores brownie skillet.
Graham Cracker Crumbs
You can buy pre-made graham cracker crumbs or crush graham crackers yourself. If you’re crushing them, use a food processor or place them in a zip-top bag and crush them with a rolling pin.
For extra flavor, you can add a pinch of cinnamon to the graham cracker crumbs. This adds a warm, inviting flavor that complements the chocolate and marshmallow perfectly. This is a great way to make easy s’mores brownies.
Variations and Serving Ideas

Adding Flavors
Add a layer of peanut butter before the marshmallows for a peanut butter s’mores brownie. You can swirl the peanut butter into the brownie batter or spread it on top before adding the marshmallows.
Incorporate extracts like peppermint or orange extract into the brownie batter. This can add a unique twist to the classic flavor. These variations are great for serving at a campfire brownies gathering.
Serving Suggestions
Serve the brownies warm with a scoop of vanilla ice cream for a delightful treat. The combination of warm brownie, melty marshmallows, and cold ice cream is irresistible.
Drizzle with a chocolate ganache brownie for an extra layer of decadence. This elevates the brownies to a whole new level of deliciousness. You can also make s’mores brownie bites by using mini muffin tins.
Make-Ahead Tips
You can make the brownie batter a day in advance. Store the batter in the refrigerator, and bake the brownies when you’re ready to serve. This saves time and makes the process easier.
You can freeze the baked brownies for later enjoyment. Wrap them tightly in plastic wrap and then foil. Thaw them at room temperature before serving. These are the perfect s’mores brownie dessert.
Common Mistakes to Avoid
Overbaking the Brownies
Overbaking the brownie base will result in dry, crumbly brownies. Always check for doneness using a toothpick, and remove the brownies when the toothpick comes out with moist crumbs.
Avoid opening the oven door too often while baking, as this can cause the brownies to cook unevenly. Stick to the recommended baking time and check for doneness accordingly. This will help you avoid chewy brownies.
Burning the Marshmallows
Marshmallows can burn quickly, so keep a close eye on them during the final baking stage. If your oven has a broiler, use it with extreme caution, as marshmallows can burn in seconds.
If the marshmallows start to brown too quickly, you can cover the brownies loosely with foil to prevent them from burning. This ensures a perfectly toasted marshmallow topping. This is also a great recipe for s’mores brownie cookies
Uneven Graham Cracker Layer
Ensure the graham cracker crumbs are evenly distributed over the marshmallows. This provides a consistent texture and flavor throughout the brownies. Use a spoon to spread the crumbs evenly.
Gently press the graham cracker crumbs into the marshmallows to help them adhere. This prevents the crumbs from falling off when you cut and serve the brownies. You might also want to try a mini s’mores brownies recipe.
Print
smores brownie Recipe
- Total Time: PT50M
- Yield: 16 servings 1x
Description
Indulge in the ultimate treat with these decadent S’mores Brownies! Combining the fudgy goodness of brownies with the classic flavors of s’mores, these are sure to be a hit.
Ingredients
- 1/2 cup (1 stick) unsalted butter, melted
- 1 cup granulated sugar
- 1/2 cup unsweetened cocoa powder
- 1/4 teaspoon salt
- 1 teaspoon vanilla extract
- 2 large eggs
- 1/2 cup all-purpose flour
- 1 cup semi-sweet chocolate chips
- 1 cup graham cracker crumbs
- 1 cup mini marshmallows
Instructions
- Preheat oven to 350°F (175°C) and grease and flour an 8×8 inch baking pan.
- In a large bowl, whisk together the melted butter, sugar, cocoa powder, and salt until well combined.
- Stir in the vanilla extract and eggs one at a time, mixing until smooth.
- Gradually add the flour, mixing until just combined. Do not overmix.
- Fold in the chocolate chips.
- Pour half of the brownie batter into the prepared pan.
- Sprinkle half of the graham cracker crumbs over the batter.
- Sprinkle half of the mini marshmallows over the graham cracker crumbs.
- Pour the remaining brownie batter over the marshmallows and graham crackers.
- Sprinkle the remaining graham cracker crumbs and mini marshmallows on top.
- Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs.
- Let the brownies cool completely in the pan before cutting into squares and serving.
Notes
- For a richer flavor, use dark chocolate chips.
- You can toast the marshmallows slightly under the broiler for a few seconds after baking for extra gooeyness. Watch them carefully to prevent burning.
- Store leftover brownies in an airtight container at room temperature for up to 3 days.
- Prep Time: PT20M
- Cook Time: PT30M
- Category: Dessert
- Method: Bake
- Cuisine: American
Nutrition
- Serving Size: 1 brownie
- Calories: 250
- Sugar: 25g
- Sodium: 100mg
- Fat: 12g
- Saturated Fat: 7g
- Carbohydrates: 35g
- Fiber: 2g
- Protein: 3g







