If you’ve ever wished s’mores could be more than a summer campfire treat, welcome to dessert heaven. These Easy S’mores Brownies with a Fudgy Chocolate Base are everything you love about the classic—gooey marshmallows, rich chocolate, buttery graham crackers—but baked into the most insanely moist, chocolatey brownie you’ve ever had.
It’s the perfect dessert mash-up: marshmallow brownies meet graham cracker crust brownies, all tied together with a thick layer of homemade fudgy chocolate goodness.
I made these the other night when I was craving something cozy but didn’t want to fuss with layering or fancy techniques. Just one bowl, one pan, and one dreamy s’mores dessert that tastes like it came straight from a bakery. The best part? You don’t need a campfire—just an oven and a serious craving.
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Easy S’mores Brownies with a Fudgy Chocolate Base
These easy S’mores Brownies combine a rich, fudgy chocolate base with golden toasted marshmallows and buttery graham cracker crunch. It’s the ultimate gooey dessert bar that brings campfire nostalgia straight to your oven — no fire pit required.
- Total Time: 45 minutes
- Yield: 12 brownies 1x
Ingredients
1/2 cup (115g) unsalted butter
3/4 cup (150g) granulated sugar
1/2 cup (100g) brown sugar, packed
2 large eggs
1 tsp vanilla extract
1/3 cup (40g) unsweetened cocoa powder
1/2 cup (65g) all-purpose flour
1/4 tsp salt
1/2 tsp baking powder
3 oz (85g) chopped semi-sweet chocolate or chocolate chips
1 cup mini marshmallows
4–5 graham crackers, broken into chunks
Instructions
Preheat your oven to 175°C (350°F). Line an 8×8 inch (20×20 cm) baking pan with parchment paper.
In a medium saucepan, melt butter over low heat. Remove from heat and stir in granulated sugar and brown sugar until smooth.
Whisk in eggs and vanilla until fully combined.
Sift in cocoa powder, flour, salt, and baking powder. Stir until just combined.
Fold in chopped chocolate.
Pour the brownie batter into the prepared pan and smooth the top.
Bake for 20–22 minutes. Remove from oven, sprinkle mini marshmallows and graham cracker pieces evenly over the top.
Return to the oven for another 7–9 minutes, or until the marshmallows are golden and puffy.
Cool completely before slicing into squares.
Notes
For a deeper chocolate flavor, add a tablespoon of espresso powder to the batter.
Let brownies cool fully before slicing to avoid sticky mess.
For extra golden marshmallows, broil for 1–2 minutes at the end — but watch closely.
Can be stored in an airtight container at room temp for 3–4 days.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Nutrition
- Serving Size: 1 brownie
- Calories: 225 kcal
- Sugar: 18g
- Sodium: 95mg
- Fat: 11g
- Saturated Fat: 6g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 29g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 40mg
Why You’ll Love These Easy S’mores Brownies
- Super fudgy brownie base: We’re talking dense, chocolate-rich, chewy perfection.
- Real s’mores flavor: Every bite brings gooey marshmallows, melted chocolate chunks, and crunchy graham crackers.
- Simple ingredients: No need for anything fancy—just pantry staples and a love for gooey desserts.
- One-pan magic: Easy to prep, easy to bake, easy to devour.
- Perfect for any season: Summer nostalgia? Check. Winter cozy vibes? Double check.
And if you’re a true chocoholic, you’ve gotta try my Hot Fudge Brownie Bread next — it’s rich, gooey, and dangerously addictive.
The Secret to These Fudgy S’mores Brownies
Here’s the truth: the brownie base makes or breaks the whole thing. We’re not using a cakey brownie here—we’re going all-in on dense, fudgy chocolate brownies loaded with real melted chocolate and just the right amount of cocoa powder for that rich, deep flavor.
And the graham crackers? They’re not just sprinkled on top—they’re baked right into the bottom like a soft crust that holds everything together. Then, mid-bake, you layer on the mini marshmallows so they get perfectly golden without burning or disappearing. You end up with a gorgeous top that’s sticky, toasty, and deliciously messy in all the right ways.
Pro Tips to Nail These Marshmallow Brownies
- Don’t overbake: Fudgy brownies should still be slightly soft in the center when you pull them out. They’ll firm up as they cool.
- Use chopped chocolate chunks: They melt better than chips and give your brownies that bakery-style richness.
- Layer wisely: Bake the brownies most of the way, then add marshmallows and chocolate pieces on top for the last 5–7 minutes.
- Line your pan: Use parchment paper so you can lift the brownies out easily (and save yourself from marshmallow cleanup nightmares).
- Cool completely before slicing: It’s hard, I know. But cutting into warm s’mores brownies = hot marshmallow chaos.
Fun Variations to Try
Want to take these brownies to the next level? Here’s how to remix your s’mores dessert bars into something extra:
- Nutella S’mores Brownies: Swirl in a few spoonfuls of Nutella into the brownie batter before baking. Hazelnut + s’mores = pure fire.
- Salted Dark Chocolate S’mores Brownies: Use dark chocolate chunks and a sprinkle of flaky sea salt on top. The salty-sweet contrast is unreal.
- Peanut Butter Cup S’mores Brownies: Add chopped mini peanut butter cups right into the brownie batter before baking. The melty pockets of PB are next level.
If you’re into next-level brownies, this Caramel Fudge Brownies recipe on Pinterest totally inspired me — those gooey caramel layers are unreal.
Final Thoughts
These Easy S’mores Brownies with a Fudgy Chocolate Base are the kind of dessert that makes people say “Wait… you made these!?” They look bakery-worthy, taste like a warm campfire memory, and come together with simple ingredients in under an hour.
Whether you’re baking for a crowd or just treating yourself to something decadent after a long week, these gooey s’mores brownies are the move. They’re rich, warm, melty, messy, nostalgic—and just impossible to stop eating.
Seriously, save this one. You’ll come back to it every time you crave a twist on the classic brownie.
