There’s something about s’mores that instantly takes you back — to the smell of toasted marshmallows by a crackling fire, the sticky fingers, the laughter, the late nights that felt endless. But sometimes, the craving for that nostalgic sweetness hits when there’s no campfire in sight. That’s where these Crinkly Fudgy S’mores Brownies come in.

They’re the perfect marriage between cozy indoor baking and the timeless magic of s’mores. A buttery graham cracker crust forms the base, rich crinkly brownies bring that deep chocolate flavor, and gooey toasted marshmallows top it all off for a dessert that’s equal parts nostalgic and indulgent.

Let’s dive in, because once you make these once, they’re guaranteed to become a comfort bake staple.

The Inspiration: Campfire Nostalgia Meets Cozy Baking

If you’ve been around here a while, you already know how much I love taking nostalgic treats and turning them into something a little more elevated — but still easy enough to make on a slow Sunday afternoon.

When I think of s’mores, I think of warmth — not just from the fire, but the feeling of connection, of slowing down, of being present. Translating that into a baked treat felt natural. The goal? Capture everything we love about traditional s’mores (the crunch, the melt, the sticky sweetness) but in brownie form — with a rich, crinkly top that makes you want to dive right in with a fork.

What Makes These S’mores Brownies Special

There are a lot of brownie recipes out there — but this one hits a little differently.

1. That crinkly brownie top: We’re using browned butter and melted chocolate chips to create a shiny, crackly crust that’s a must for any fudgy brownie lover.

2. A real graham cracker crust: Instead of sprinkling crumbs on top, we’re making a proper buttery crust that gives structure and that classic s’mores snap.

3. The toasted marshmallow topping: Forget mini marshmallows — large ones toast beautifully and give you that campfire caramelization that looks stunning fresh out of the oven.

4. The melty chocolate squares: Hershey’s bars on top seal the deal — because what’s a s’more without them?

Each layer plays its part. The graham base adds warmth, the brownies bring richness, and the marshmallows and chocolate finish everything with that gooey, golden perfection.

Let’s Get into these Crinkly Fudgy S’mores Brownies!

Yield: 9 brownies
Prep Time: 10 minutes
Cook Time: 40 minutes
Total Time: ~50 minutes
Equipment Needed:

• 8×8 inch baking dish

• Parchment paper

• Mixing bowls

• Whisk

• Spatula

Ingredients

For the Graham Cracker Crust

• 1 cup graham cracker crumbs (about 8 full sheets, crushed finely)

• ⅓ cup brown sugar

• ½ cup unsalted butter, melted

For the Crinkly Fudgy Brownies

• ½ cup unsalted butter, browned

• 1 cup semisweet chocolate chips

• ½ cup white granulated sugar

• ½ cup brown sugar

• ½ teaspoon salt

• 3 eggs

• 1 teaspoon vanilla extract

• ½ cup cocoa powder

• ½ cup all-purpose flour

For the Toppings

• Large marshmallows (enough to cover the top layer)

• Hershey’s chocolate bars, broken into pieces

Directions

1. Prep and Preheat

Preheat your oven to 350°F (177°C). Line your 8×8 inch baking dish with parchment paper, leaving a little overhang on the sides for easy removal later.

2. Make the Graham Cracker Crust

In a medium bowl, combine graham cracker crumbs, brown sugar, and melted butter. Mix until the texture resembles wet sand.

Press the mixture firmly and evenly into the bottom of your parchment-lined pan using the back of a spoon or the bottom of a glass.

Bake for 8–10 minutes, just until lightly golden. Set aside to cool slightly while you prepare the brownie layer.

3. Brown the Butter

In a small saucepan, melt your ½ cup of butter over medium heat. Let it continue to cook, swirling occasionally, until it foams and turns a deep amber color with nutty aromas — about 5 minutes.

Pour the browned butter into a large heatproof bowl and immediately add the semisweet chocolate chips. Let sit for a minute, then stir until smooth and glossy.

4. Whisk in the Sugars

Add both the granulated and brown sugar to your melted butter-chocolate mixture. Whisk until fully combined — it’ll be thick and slightly grainy, which is perfect for that crinkly top.

5. Add the Eggs and Vanilla

Add eggs one at a time, whisking well between each addition to incorporate air. Stir in vanilla extract.

You want to whisk this mixture for a full minute — this is what helps form that shiny crust when the brownies bake.

6. Fold in the Dry Ingredients

Sift in cocoa powder, flour, and salt. Use a spatula to gently fold everything together just until no streaks of flour remain. Be careful not to overmix — we want that fudgy texture.

7. Assemble and Bake

Pour the brownie batter over your graham cracker crust and spread evenly to the edges.

Bake for 30–35 minutes, or until the top looks crinkly and a toothpick inserted in the center comes out with a few moist crumbs (not wet batter).

8. Add the Toppings

Once the brownies are nearly done, remove from the oven and carefully place large marshmallows on top in a single layer. Add pieces of Hershey’s chocolate in between.

Return to the oven and bake for another 3–5 minutes, or until the marshmallows are puffed and golden brown.

For extra toastiness, you can switch on the broiler for 30–60 seconds — but keep a close eye on them so they don’t burn!

9. Cool and Slice

Let your s’mores brownies cool completely before slicing. The marshmallows will firm up slightly as they rest, making them easier to cut while still gooey in the center.

Use a greased knife or a knife dipped in hot water for cleaner cuts.

Baker’s Notes & Cozy Tips

✨ Make Ahead Magic: These brownies taste even richer the next day. Store them covered at room temperature for up to 2 days, or refrigerate for up to 5.

🔥 Want extra campfire vibes? Serve warm with a drizzle of melted chocolate or a scoop of toasted marshmallow ice cream.

🍫 Customize it: Try using dark chocolate chips for a more intense cocoa flavor or swap the Hershey’s bars for chunks of your favorite chocolate.

🌿 Gluten-free twist: Substitute gluten-free graham crackers and a 1:1 GF flour blend for a version that everyone can enjoy.

Why You’ll Love These S’mores Brownies

• Texture heaven: Buttery crust + gooey marshmallow + fudgy center.

• Visually stunning: Those toasted marshmallows on top? A total showstopper.

• Easy but impressive: Minimal prep, maximum payoff.

• Crowd-pleaser: Perfect for parties, cozy nights in, or that “I just need chocolate” moment.

If you love cozy desserts that blend nostalgia with indulgence, this is the one to bookmark. Every bite of these s’mores brownies feels like a hug — the kind of dessert that reminds you how sweet slowing down can be.

Pair It With…

Because we’re all about setting the vibe here:

• A warm cup of hot cocoa or a cinnamon latte

• Jazz or lo-fi in the background

• A soft blanket, candlelight, and maybe a good journal moment while they bake

There’s no denying it — these Crinkly Fudgy S’mores Brownies are cozy personified. They’re rich and nostalgic, simple but deeply satisfying. You don’t need a firepit or a tent, just your oven and a craving for something that tastes like home.

So the next time you’re in the mood for comfort, grab your whisk, preheat that oven, and bring the campfire indoors — one warm, gooey bite at a time.