Brownie S’more Bars

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If you’ve ever wished for the perfect mash-up between rich brownies and gooey campfire s’mores, these brownie s’more bars are your dream come true. With a buttery graham cracker crust, a fudgy chocolate center, and golden marshmallows on top, this recipe delivers maximum comfort in every bite. In this article, you’ll learn how to make the best brownie s’more bars with simple steps, pro tips, and the right ingredients. Whether you’re making dessert for a crowd or just treating yourself, this guide covers everything you need to know to make them from scratch — and devour them fast.

Table of Contents

How Brownie S’more Bars Became Our Favorite Sweet Fix

Sweet Beginnings in Our Tiny Kitchen

Hi, I’m Saly. I’m a wife, a home cook, and the kind of person who’s always chasing flavor with as few dishes as possible. The first time I made brownie s’more bars, it wasn’t for a party or a holiday. It was just a Tuesday. My husband came home from work craving “something chocolatey,” and I was craving marshmallows. The pantry had both, plus a half sleeve of graham crackers. That’s how this dessert was born — out of craving and convenience.

Our oven did the heavy lifting. The graham crust toasted just enough to add crunch. The brownie layer? Fudgy and thick, not too cakey. And those marshmallows bubbled up and browned to gooey perfection under the broiler. My husband said it tasted like a summer bonfire in a baking pan. That was the moment I knew — this wasn’t just a recipe. It was a keeper.

I’ve tweaked the ingredients over time to get the perfect balance of chew, crisp, and melt. And every time I make it, it brings back that night we stood over the stove, slicing while they were still too hot to cut, laughing and licking chocolate off our fingers.

These brownie s’more bars have now earned a permanent spot next to other family favorites like the banana pudding poke cake and strawberries pound cake. If you love fast, comforting desserts that taste like memories, this one’s for you.

Make the Ultimate Brownie S’more Bars at Home

Building the Best Three-Layer S’mores Bar

A proper brownie s’more bar starts with three simple layers: a crisp graham cracker crust, a fudgy brownie center, and gooey toasted marshmallows on top. To get the texture just right, start with crushed graham crackers mixed with melted butter and a touch of brown sugar or maple syrup. Press it firmly into a lined 8×8 pan — use the bottom of a glass or measuring cup for even pressure — then pre-bake for 10–12 minutes until golden.

Next comes the brownie layer. You can use a boxed mix in a pinch, but for real depth, go homemade. Mix eggs, sugar, vanilla, melted butter or nut butter, cocoa powder, and chocolate chips for that rich, moist texture. Spread over the crust while it’s still warm. Bake again until the edges are set and a toothpick comes out mostly clean.

Once baked, don’t rush the marshmallows. Scatter mini or halved large marshmallows across the top, then broil for just 1–2 minutes. Watch closely — they go from toasted to torched in seconds.

Pro Tips for Picture-Perfect Bars

Let the bars cool before slicing if you want clean edges. Use a greased knife or wipe between cuts. For best flavor and texture, eat them warm or reheat for 10 seconds in the microwave.

Store leftovers in an airtight container for up to five days — if they last that long. You can also freeze them, though honestly, they’re best enjoyed fresh.

And if you’re already a fan of indulgent layers, you’ll also love the l emon poke pudding cake and the rich chocolate pudding cake, both equally comforting and craveable.

Brownie S’more Bar Variations You’ll Want to Try

Flavor Twists to Keep It Fun

Once you’ve mastered the classic brownie s’more bars, the real fun begins — remixing them. Swap the graham crackers for crushed Biscoff cookies or Oreos to give your base a whole new personality. Prefer peanut butter with your chocolate? Add a swirl of creamy peanut butter into the brownie batter before baking. You can also mix in chopped Reese’s or Snickers for that extra surprise with every bite.

Want to level up the marshmallow topping? Use flavored marshmallows — like vanilla bean or even strawberry — to add a unique spin. Or toast coconut flakes on top along with the marshmallows for a tropical, toasty crunch.

Marshmallows toasting on top of brownie s’more bars in oven

For a fall twist, sprinkle cinnamon or pumpkin pie spice into the crust and top with a drizzle of melted white chocolate. The options are endless, and these changes take almost no extra effort — just flavor-packed upgrades baked right in.

Gluten-Free, Dairy-Free & More

Diet-friendly doesn’t have to mean dessert-free. You can easily make brownie s’more bars gluten-free by using certified gluten-free graham crackers and almond flour in the crust. For dairy-free, swap in coconut oil or vegan butter and use dairy-free chocolate chips. Marshmallows? Most are naturally dairy-free, but always check the label.

If you’re experimenting with textures, you can even try a mochi-inspired brownie base like the ones in our mochi buttermilk pancakes — it’ll give your bars a fun chew.

Need a brunch-friendly spin? Turn them into breakfast bars (no judgment here!) and serve alongside a cozy slice of blueberry buttermilk pancake casserole. Sweet, filling, and absolutely unforgettable

Storing, Serving & Smart Tips for Brownie S’more Bars

How to Store and Reheat Like a Pro

Brownie s’more bars are best enjoyed the day they’re made — warm, gooey, and fresh from the oven. But let’s be real: life happens, and leftovers are likely. Store any extras in an airtight container at room temperature for up to 3 days, or in the fridge for 5 days if your kitchen runs warm.

To reheat, pop a bar in the microwave for 10–15 seconds. The marshmallows puff back up, and the chocolate softens beautifully. If you prefer oven reheating, cover loosely with foil and warm at 300°F for 5–7 minutes.

Freezing? Absolutely. Wrap individual bars in wax paper and seal in a freezer bag. They’ll keep for 1–2 months. Thaw overnight or heat gently from frozen.

The Best Way to Serve Brownie S’more Bars

Want the cleanest cuts? Use a hot, wet knife and wipe it clean between each slice. For a rustic look, let them cool just enough to hold their shape, then dig in — no perfection needed.

These bars are perfect on their own, but they pair beautifully with a scoop of vanilla bean ice cream or a drizzle of chocolate syrup. Hosting a gathering? Serve them alongside savory bites like a cheesy chicken and tater tot casserole for a satisfying meal-to-dessert spread.

Plated brownie s’more bars with scoop of vanilla ice cream on rustic table

And for the final sweet bite, consider a soft recipe for pudding cake to round out your treat table. You’ll have a lineup that makes everyone ask, “What’s next?”

Frequently Asked Questions

How do you keep s’mores bars from getting too gooey?

Let them cool slightly before cutting. If the marshmallows are too hot, they’ll slide and make the bars messy. Chill for 15 minutes or more before slicing for cleaner results.

Can you make brownie s’mores bars ahead of time?

Absolutely. Bake the brownie and crust layers a day in advance. Add marshmallows and broil just before serving for that fresh-toasted effect.

What’s the best chocolate to use in s’more bars?

Use dark or semi-sweet chocolate chips for a richer flavor. You can also use chopped baking chocolate or even a combo of milk and dark for balance.

Do s’mores brownies need to be refrigerated?

Not necessarily. If your kitchen is cool, they’ll be fine at room temperature for a couple of days. For longer storage, refrigerate in an airtight container.

Final Note

Brownie s’more bars are everything you want in a dessert — fudgy, crispy, gooey, and wildly satisfying. Whether you make them for a celebration or a simple night in, this treat delivers a bit of nostalgia with every bite. And the best part? It’s all made in one pan, in under an hour, and with everyday ingredients.

If you loved these bars, don’t miss our other comforting favorite — the gooey, over-the-top S’mores Brownie Skillet — it’s just as quick to make and even quicker to disappear.

Hungry for more? Be sure to join me on Facebook and Pinterest to keep the inspiration going.

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Brownie S’more Bars That Will Make You Crave Another Bite