On a warm summer evening, I found myself longing for the delicious nostalgia of campfire s’mores. That’s when the idea struck me: why not create S’mores Cookie Bars? These easy-to-make treats bring all the gooey joy of the classic dessert without the mess of roasting marshmallows. Featuring a crunchy graham cracker base, soft cookie dough mixed with mini marshmallows, and a luscious layer of chocolate, you’ll love how these bars balance texture and flavor so perfectly. They’re a delightful option for family gatherings or cozy nights in, and the best part? You can make them in advance and simply indulge whenever the craving strikes. Curious to learn how to whip up these irresistible bars and impress your friends? Let’s dive in!

Why are S’mores Cookie Bars so loved?
Effortless Indulgence: These bars offer the comforting flavors of classic s’mores in a simple, mess-free format that anyone can master.
Decadent Layers: The crunchy graham cracker base, chewy cookie dough, and melted chocolate create a heavenly combination that’s hard to resist.
Versatile Delight: Feel free to customize with flavored chocolate bars or nuts for a personal touch, making them perfect for every occasion.
Perfect for Sharing: Bake a batch for gatherings—everyone will love the gooey goodness! If you’re in the mood for more sweet treats, check out these tasty Blueberry Oatmeal Bars that are just as delightful!
Make-Ahead Option: Prepare these bars in advance for easy snacking anytime; they’ll stay fresh for days, ideal for your busy schedule.
S’mores Cookie Bars Ingredients
For the Base
• Graham Crackers – Provides a crunchy texture; gluten-free options are available for dietary needs.
• Unsalted Butter – Adds richness; you can swap with salted butter for a savory twist.
• Granulated Sugar – Sweetens the bars and aids in browning; consider coconut sugar for a healthier alternative.
• Light Brown Sugar – Contributes moisture and a slight caramel flavor; dark brown sugar enhances flavor depth.
For the Dough
• Large Eggs – Binds everything together and adds structure; a flax egg serves as a suitable vegan alternative.
• Vanilla Extract – Essential for flavor; opt for pure vanilla for the best taste experience.
• All-Purpose Flour – Gives the bars their structure; almond or coconut flour can be used for gluten-free versions.
• Salt – Balances sweetness; omit if using salted butter.
• Baking Soda – Helps the bars rise; can be replaced with baking powder if needed.
For the Mix-Ins
• Semi-sweet Chocolate Chips – Offers a rich chocolatiness; dark chocolate could be used for a more intense flavor.
• Mini Marshmallows – Adds gooey s’mores charm; swap for larger marshmallows, cut to size if desired.
For the Topping
• Hershey’s Milk Chocolate Bars – Melts beautifully on top for that classic chocolate layer; feel free to use any chocolate bar you prefer for a personal touch.
With these S’mores Cookie Bars ingredients in hand, you’re well on your way to creating a sweet indulgence that captures the joy of summer nights by the fire!
Step‑by‑Step Instructions for S’mores Cookie Bars
Step 1: Preheat Your Oven
Preheat your oven to 375°F (190°C). This ensures your oven is perfectly heated to bake those marvelous S’mores Cookie Bars, creating the ideal golden exterior and soft interior. While the oven heats up, gather your ingredients and prepare to enjoy a delightful baking experience.
Step 2: Prepare the Pan
Line a 9×13-inch baking pan with parchment paper, leaving some extra hanging over the edges for easy removal later. This step makes it simple to lift the entire batch of S’mores Cookie Bars out after baking, allowing for quick cutting and serving, while also making cleanup a breeze.
Step 3: Lay Graham Crackers
Place a single layer of graham crackers at the bottom of the prepared pan. Fit them snugly together, creating a sturdy base that will uphold your cookie bars. This crispy foundation is essential for achieving that classic s’mores flavor and texture in every bite.
Step 4: Make the Cookie Dough
In a large mixing bowl, cream together the softened unsalted butter, granulated sugar, and light brown sugar until light and fluffy, about 2-3 minutes. Add in the large eggs and vanilla extract, mixing until well combined. In another bowl, whisk together the all-purpose flour, salt, baking soda, semi-sweet chocolate chips, and mini marshmallows, then fold this mixture into the butter mixture gently until just combined.
Step 5: Spread the Dough
Evenly distribute the cookie dough over the graham cracker layer, using a spatula to press it down gently. If desired, sprinkle a few extra mini marshmallows on top of the dough, adding to the gooeyness of your S’mores Cookie Bars. This helps create a melty, indulgent treat as it bakes.
Step 6: Bake the Bars
Place your pan in the preheated oven and bake for 25-30 minutes. Look for a golden-brown top, and perform the toothpick test: insert a toothpick into the center—if it comes out clean or with just a few moist crumbs, your S’mores Cookie Bars are ready to come out of the oven!
Step 7: Add Chocolate Topping
As soon as your bars are done baking, remove the pan from the oven. While they are still warm, break the Hershey’s milk chocolate bars into pieces and place them evenly on top of the hot cookie bars. Allow the chocolate to melt slightly for about 5-10 minutes, creating a deliciously gooey layer.
Step 8: Cool & Serve
Let the S’mores Cookie Bars cool in the pan for 20-30 minutes, allowing the chocolate to set. Once cooled, use the parchment paper edges to lift the entire batch out of the pan. Cut into squares and serve your delightful treats. Enjoy the warm, gooey goodness that is sure to impress family and friends!

S’mores Cookie Bars: Exciting Variations
Feel free to get creative with these S’mores Cookie Bars and customize them to fit your taste and dietary preferences!
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Gluten-Free: Swap graham crackers with gluten-free versions and use almond or coconut flour for the dough for a gluten-free treat.
Make each bite delightful without sacrificing flavor, ensuring everyone can enjoy this sweet indulgence! -
Vegan Delight: Replace eggs with a flax egg and use vegan chocolate and margarine.
You’ll still get the gooey texture and sweet taste of the classic, making them perfect for everyone’s plant-based diet. -
Nutty Crunch: Stir in some chopped walnuts or pecans into the cookie dough for an added crunch.
These provide a delightful texture contrast that enhances the overall experience of your s’mores bars. -
Spicy Twist: Mix a pinch of cayenne pepper or cinnamon into the dough for a warm, spicy kick.
It’s an unexpected twist that will surprise your taste buds and elevate your dessert game! -
Flavorful Bars: Experiment with flavored chocolate bars like caramel or espresso for new taste sensations.
Trying these flavors can give your S’mores Cookie Bars a unique twist and create conversations among your guests! -
S’mores Brownies: Layer the cookie dough over a rich brownie base for a decadent treat.
The addition of fudgy brownie elevates the bars to new heights of indulgence that chocolate lovers will adore! -
Marshmallow Swirl: Instead of mini marshmallows, try folding in marshmallow fluff for a gooey, swirled effect.
It adds a luscious texture, making every bite a tantalizing experience. -
Melted Chocolate Drizzle: Drizzle some melted chocolate over the cut bars for a beautiful presentation.
This simple touch takes your dessert to the next level, making it as gorgeous as it is delicious!
If you’re in the mood for more delightful baked goods, don’t miss out on these scrumptious Apple Snickerdoodles that offer another twist on sweet treats!
Expert Tips for S’mores Cookie Bars
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Mix Gently: Ensure you mix the cookie dough just until combined to avoid tough bars; overmixing can lead to a dense texture.
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Choose Your Pan Wisely: If using a glass baking pan, lower the temperature by 25°F. Glass retains heat differently, so be mindful of cooking times.
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Check Doneness: Use the toothpick test—insert it into the center of the bars. If it comes out with just a few moist crumbs, they’re perfectly done!
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Chocolate Melting Tip: Sprinkle the chocolate bars on top while the bars are still warm to achieve that gooey chocolate layer.
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Storing Cookies: Keep your S’mores Cookie Bars in an airtight container at room temperature to maintain their chewy texture and flavor for up to 5 days.
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Customizable Fun: Experiment with flavored chocolate or add nuts for a personalized twist on these delightful S’mores Cookie Bars!
What to Serve with S’mores Cookie Bars
Warm, gooey, and decadently delicious, these treats can be perfectly complemented with a variety of delightful side dishes.
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Vanilla Ice Cream: A classic pairing that adds a creamy contrast to the rich cookie bars, enhancing the overall flavor experience. Imagine the cold scoop melting into the warm, chocolatey goodness—heavenly!
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Chocolate Drizzle: Elevate your indulgence by drizzling chocolate sauce over each bar. This creates an extra layer of sweetness and makes for a stunning presentation.
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Fresh Berries: Bright, tart berries like raspberries or strawberries provide a refreshing burst of flavor, balancing the richness of the s’mores bars beautifully. They add a delightful pop of color, too!
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Whipped Cream: A light, airy topping that perfectly offsets the cookie bars’ dense texture. It’s a lovely way to add a touch of elegance to your dessert experience.
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Caramel Sauce: Drizzle warm caramel on top or alongside your bars for an indulgent sweet-salty contrast that enhances the s’mores flavor.
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Milk or Chocolate Milk: A cold glass of milk pairs wonderfully with sweet treats. Chocolate milk adds an extra layer of nostalgia and comfort to your dessert.
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Nutty Granola: Sprinkle some crunchy granola for added texture. The nutty flavor complements the bars and provides a satisfying crunch with every bite.
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Coffee or Espresso: For adults, a strong coffee or espresso can be a delightful contrast, cutting through the sweetness while complementing the chocolate.
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S’mores Dip: Serve a warm s’mores dip as a fun interactive treat alongside your cookie bars, inviting guests to scoop and enjoy even more gooey goodness.
Experiment with these pairings to craft your ideal dessert experience!
Make Ahead Options
These S’mores Cookie Bars are perfect for busy home cooks looking to save time during the week! You can prepare the cookie dough up to 24 hours in advance. Simply mix the ingredients and refrigerate the dough in an airtight container. The graham cracker base can also be layered into the pan and covered, ready to complete once you’re ready to bake. When you’re set to indulge, spread the chilled dough over the graham crackers, bake as instructed, and top with chocolate immediately after baking for that ooey-gooey finish. With these make-ahead tips, you’ll be enjoying delicious S’mores Cookie Bars with minimal effort whenever the cravings hit!
How to Store and Freeze S’mores Cookie Bars
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Room Temperature: Keep the S’mores Cookie Bars in an airtight container at room temperature for up to 3-5 days to maintain their chewy texture and rich flavor.
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Fridge: Store in the refrigerator if you prefer a firmer chocolate topping; they’ll last about a week. Be sure to wrap them well to avoid drying out.
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Freezer: For longer storage, freeze the bars in an airtight container or freezer bag for up to 2 months. Thaw overnight in the fridge before enjoying!
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Reheating: Warm individual bars in the microwave for about 10-15 seconds to restore that gooey, melty goodness before serving.

S’mores Cookie Bars Recipe FAQs
How do I know if my ingredients are ripe or suitable for this recipe?
When selecting graham crackers, look for ones that are crisp and not broken, as they’ll form the sturdy base. Make sure your marshmallows are soft and fluffy; avoid any that have hardened or show signs of drying out. If using chocolate bars, choose ones that are smooth and without blemishes for the best melting results.
What’s the best way to store leftover S’mores Cookie Bars?
To keep your S’mores Cookie Bars fresh, place them in an airtight container at room temperature for about 3-5 days. If you’d like a firmer chocolate topping, try storing them in the refrigerator instead; they can last for up to a week when wrapped well to prevent drying out.
Can I freeze S’mores Cookie Bars for later enjoyment?
Absolutely! To freeze your S’mores Cookie Bars, first cut them into squares and layer them between sheets of parchment paper in an airtight container or freezer bag. They can be frozen for up to 2 months. When you’re ready to enjoy them again, just thaw in the fridge overnight. You can also warm them in the microwave for about 10-15 seconds after thawing for that gooey goodness.
What should I do if my cookie bars are too dry or crumbly?
If you find your S’mores Cookie Bars have turned out dry, it might be due to overbaking. To avoid this, always check for doneness a few minutes before the suggested baking time. If they do turn out too crumbly, try adding a little frosting or a drizzle of melted chocolate to bring moisture back and enhance flavor.
Are there any ingredient substitutions for dietary restrictions?
Yes! You can easily modify the S’mores Cookie Bars for different dietary needs. Substitute the graham crackers with gluten-free options to make them suitable for gluten-sensitive individuals. For a vegan version, use flax eggs instead of large eggs, and opt for dairy-free chocolate and butter alternatives. These small tweaks will ensure everyone can enjoy these delicious bars!
Can pets have any ingredients used in these cookie bars?
It’s essential to avoid sharing these S’mores Cookie Bars with pets. Chocolate, especially, is toxic to dogs and cats. While graham crackers and marshmallows aren’t harmful in small amounts, they aren’t healthy for pets either. Always make sure to keep these decadent treats out of reach from your furry friends!

Irresistible S’mores Cookie Bars for Your Sweet Cravings
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C).
- Line a 9x13-inch baking pan with parchment paper.
- Place a single layer of graham crackers at the bottom of the prepared pan.
- In a large mixing bowl, cream together the unsalted butter, granulated sugar, and light brown sugar until light and fluffy. Add in the eggs and vanilla extract, mixing until well combined. In another bowl, whisk together the flour, salt, baking soda, chocolate chips, and mini marshmallows, then fold this mixture into the butter mixture gently.
- Evenly distribute the cookie dough over the graham cracker layer. Sprinkle some mini marshmallows on top if desired.
- Place your pan in the preheated oven and bake for 25-30 minutes until golden-brown.
- Remove the pan from the oven and while warm, place the broken Hershey's chocolate bars on top to melt.
- Let the bars cool for 20-30 minutes and then lift out using the parchment paper. Cut into squares and serve.

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