Smores Cookie Bars: A Gooey Campfire Treat Baked Right at Home

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Growing up in Santa Rosa, summer evenings meant backyard fires and sticky fingers from melting s’mores. My dad would toast the marshmallows just to the edge of burnt, then sandwich them with chocolate between graham crackers. Those moments were golden. These smores cookie bars bring all that nostalgia to my kitchen—gooey marshmallow fluff, melty Hershey bars, and that signature graham cracker crunch, all baked into one sliceable treat. It’s my go-to when I want a crowd-pleaser without the bonfire. And the best part? No mosquito spray required.

Campfire Flavor in Every Bite

These bars are the ultimate s’mores upgrade. They’ve got a chewy cookie base crammed with crushed graham crackers, layered with creamy Hershey’s milk chocolate and marshmallow fluff, then topped with more dough and baked to golden perfection.

What makes this recipe special?

• Marshmallow fluff stays gooey even after baking
• The chocolate bar layer melts into a fudgy slab
• You chill and flip the dough layers—so the top and bottom bake evenly

Unlike traditional cookies that may spread or melt inconsistently, this bar style holds together with clean slices and a buttery bite.

📌 Tip: Use parchment for clean lifting. It’s a must for layered bars like these.

Want more ideas like this? Try our brookie cookie recipe or these eggless chocolate chip cookies that pack serious gooey energy.

How to Make S’mores Cookie Bars Step-by-Step

Here’s exactly how I make these gooey layered cookie bars in under 40 minutes:

🧈 Start with the Dough

Cream ½ cup softened butter with ⅓ cup brown sugar and ¼ cup granulated sugar. Add 1 egg and a splash of vanilla.

Mix in:

• 1½ cups all-purpose flour
• ½ cup crushed graham crackers (about 3.5 sheets)
• ¼ tsp salt
• ¾ tsp baking soda

Split the dough into two halves. Press one half into a parchment-lined 8×8” pan and chill it. Repeat with the second half, then chill that one too.

🍫 Layer It Up

Lay out 5 standard Hershey bars over one dough layer (break to fit). Then spread 1½ cups marshmallow fluff over the chocolate. Carefully flip the second dough layer on top.

Bake at 350°F for 25 minutes. Let it cool completely for clean cuts. This is your moment of gooey victory.

⏲️ Total Time: 35 minutes | Servings: 16
🔥 Pro Tip: Cooling is key. Warm fluff = mess. Room temp = perfect slices.

If you love easy treats with big payoff, don’t miss these mini cookies with chips or our rice krispie treats with marshmallow fluff.

Need more marshmallow magic? Try our rice krispies ice cream or dreamy cake and pops.

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Serving, Storage, and Variations

🍽️ Serving Ideas
Slice into 16 squares and serve at room temp or slightly warm. Pair with:

• A glass of cold milk
• Drizzle of chocolate sauce
• Crushed graham topping for flair

🥶 Storage Tips
Cool completely, then store in a sealed container:

• Room temp: 4–5 days
• Fridge: Up to 10 days
• Freezer: 2 months (wrap each square in wax paper + foil)

♻️ Variations to Try

• Use dark chocolate instead of milk
• Swap graham crackers for digestive biscuits
• Add chopped pecans to the top layer for crunch
• Sprinkle sea salt post-bake for a gourmet vibe

If you love creative desserts, don’t miss our carrot cake cookies or biscoff cake for another sweet surprise.

Why These S’mores Cookie Bars Hit Every Sweet Spot

There’s something magical about the way s’mores cookie bars bring people together. It’s not just the gooey chocolate or the crackle of graham—it’s the memory they stir. I first made these bars for a block party, and by the time the sun set, I had six requests for the recipe and not a crumb left on the tray. That’s the magic of s’mores: warm, familiar, and always crowd-pleasing.

The structure of these s’mores cookie bars also makes them the perfect pick for potlucks or lunchbox surprises. Unlike traditional cookies that can get soft or misshapen in storage, these bars hold their shape beautifully and still taste incredible days later. If you’re wrapping them for travel or gifting, lay a square of wax paper between layers to prevent sticking.

Want to elevate the flavor? Sprinkle crushed graham cracker dust over the top post-bake, or torch the marshmallow fluff before sealing the second dough layer. The subtle char brings out that toasted campfire aroma without needing a single flame. You could even swirl a spoonful of peanut butter into the fluff for an indulgent twist.

What I love most is how easy these s’mores cookie bars are to customize. Add chopped nuts, swap in white chocolate, or drizzle caramel after baking. Each variation feels fresh but still holds onto that nostalgic charm. Whether you’re baking with kids, bringing dessert to a cookout, or cozying up for movie night, s’mores cookie bars deliver the fun of s’mores—no tent required.

For more portable sweets, check out our boston cream cupcakes or these peanut butter oatmeal balls. Every bite is one step closer to your new favorite dessert bar.

For more recipes like s’mores cookie bars, make sure to follow me on  Pinterest.

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FAQs About Smores Cookie Bars