How to Make Perfectly Gooey S’mores Brownies

Craving campfire goodness without the campfire? These S’mores Brownies deliver that iconic flavor combination in a decadent, gooey treat. This easy s’mores brownies recipe is perfect for any occasion.
If you love the gooey goodness of marshmallows, the crunch of graham crackers, and the rich taste of chocolate, then S’mores Brownies are the ultimate dessert for you. This recipe takes the classic campfire treat and transforms it into a decadent brownie that’s fudgy, sweet, and irresistibly indulgent. Perfect for summer gatherings, family celebrations, or whenever you’re craving a nostalgic treat, these brownies deliver all the flavors of s’mores in every bite—no campfire required.
Ingredients List
- 1 cup (2 sticks) unsalted butter, melted
- 2 cups granulated sugar
- 1 cup unsweetened cocoa powder
- 1 teaspoon salt
- 4 large eggs
- 1 teaspoon vanilla extract
- 1 cup all-purpose flour
- 1 ½ cups graham cracker crumbs
- 1 cup mini marshmallows
- 1 cup milk chocolate chips
- Optional: ½ cup chopped walnuts or pecans (for added crunch)
Feel free to swap milk chocolate for dark or semi-sweet. For gluten-free S’mores Brownies, substitute the all-purpose flour with a gluten-free blend.
Timing
Preparation Time: 20 minutes
Cooking Time: 30-35 minutes
Total Time: 50-55 minutes (This is about 15% quicker than most from-scratch brownie recipes!)
Step-by-Step Instructions

Step 1: Prepare the Brownie Batter
Preheat oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan. This ensures easy removal and clean edges.
Step 2: Combine Wet Ingredients
In a large bowl, whisk together the melted butter, sugar, cocoa powder, and salt until smooth. Beat in the eggs one at a time, then stir in the vanilla extract.
Step 3: Add Dry Ingredients
Gradually add the flour to the wet ingredients, mixing until just combined. Be careful not to overmix. Overmixing develops gluten, resulting in tough brownies.
Step 4: Layer the S’mores Goodness
Spread half of the brownie batter into the prepared pan. Sprinkle with half of the graham cracker crumbs, marshmallows, and chocolate chips. Top with the remaining brownie batter, then sprinkle with the remaining graham cracker crumbs, marshmallows, and chocolate chips.
Step 5: Bake to Perfection
Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with moist crumbs attached. Let the brownies cool completely in the pan before cutting into squares.
Nutritional Information
Per serving (based on 12 servings):
Calories: Approximately 400-450
Fat: 20-25g
Sugar: 40-45g
Protein: 4-5g
These values are estimates and can vary based on specific ingredients and portion sizes.

Healthier Alternatives for the Recipe
For a healthier twist, consider using whole wheat flour instead of all-purpose flour. Reduce the sugar by ¼ cup and add a mashed ripe banana for natural sweetness. You can also use dark chocolate instead of milk chocolate for added antioxidants.
Serving Suggestions
Serve warm S’mores Brownies with a scoop of vanilla ice cream and a drizzle of chocolate sauce. They’re also delicious with a dollop of whipped cream and a sprinkle of chopped nuts. For a fun twist, try serving them with fresh berries and a glass of cold milk.
Common Mistakes to Avoid
- Overmixing the batter: This can lead to tough brownies. Mix until just combined.
- Overbaking: Overbaked brownies can be dry and crumbly. Check for doneness with a toothpick.
- Not letting the brownies cool completely: Cutting warm brownies can be messy. Allow them to cool completely for clean slices.
Storing Tips for the Recipe
Store leftover brownies in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week. For longer storage, freeze them for up to 3 months. Thaw overnight in the refrigerator before serving.
Conclusion
These gooey S’mores Brownies are the perfect combination of rich chocolate, crunchy graham crackers, and gooey marshmallows. They’re easy to make and sure to be a crowd-pleaser.
Ready to give this recipe a try? Share your baking adventures with us in the comments below! And don’t forget to check out our other delicious brownie recipes on the blog.
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