S’mores Cookie Bars – Easy, Chewy, Gooey Campfire Treat! 45 Minutes Prep Time.

Easy S’mores Cookie Bars: All the Campfire Flavor, Baked into One Perfect Bar

If you’re a fan of the classic campfire treat, then you’re going to adore these S’mores Cookie Bars! They combine all the beloved flavors of s’mores – crispy graham crackers, rich chocolate, and fluffy marshmallows – into a delightful, easy-to-make bar. Perfect for sharing at parties, enjoying at home, or even taking on a picnic, these cookie bars are a sweet nostalgia that everyone will enjoy. Each bite is a harmonious blend of chewy cookie, gooey marshmallows, and melty chocolate. The graham cracker crumbs add a delightful crunch, making these bars utterly irresistible. Plus, they are simple enough to whip up in no time, making them an ideal dessert for all occasions. For another s’mores-inspired treat, try our S’mores Chocolate Cake.

Why You’ll Love This S’mores Cookie Bars Recipe

• All the Classic S’mores Flavors: Crispy graham, rich chocolate, and gooey marshmallow in every single bite.
• Incredibly Easy to Make: Simple ingredients and straightforward steps – no campfire required!
• Perfectly Chewy and Gooey Texture: A delicious cookie base with pockets of melted chocolate and toasted marshmallow.
• Great for Sharing: A crowd-pleasing dessert that’s perfect for parties, potlucks, and family gatherings.
• Endlessly Customizable: Easy to adapt with different chocolates, nuts, or flavored marshmallows.

Your Simple Ingredients for Perfect S’mores Cookie Bars

• 1 cup unsalted butter, softened
• 1 cup brown sugar, packed
• ½ cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 2½ cups all-purpose flour
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1 cup graham cracker crumbs
• 1 cup chocolate chips (semi-sweet or milk)
• 1 cup mini marshmallows
• Extra chocolate chips and mini marshmallows, for topping

Pro Tip: The Secret to Perfectly Gooey Marshmallows
For the most delicious, toasted marshmallow flavor and texture, sprinkle the extra mini marshmallows on top of the bars during the last 5 minutes of baking. This allows them to get perfectly golden and gooey without burning, creating that classic campfire marshmallow experience right in your oven.

How to Make Perfect S’mores Cookie Bars

Phase 1: Prep and Preheat

Preheat and Prepare Pan: Preheat your oven to 350°F (175°C) . Grease a 9×13-inch baking pan or line it with parchment paper, leaving an overhang on the long sides for easy removal.

Phase 2: Make the Cookie Dough Base

Cream Butter and Sugars: In a large mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until the mixture is light, fluffy, and well combined.
Add Eggs and Vanilla: Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, and salt.
Mix Wet and Dry: Gradually add the dry mixture to the butter mixture, mixing until just combined. Be careful not to overmix.
Fold in Graham Cracker Crumbs and Chocolate Chips: Gently fold in the graham cracker crumbs and 1 cup of chocolate chips until they are evenly distributed throughout the dough.

Phase 3: Assemble the Bars

First Layer: Spread half of the cookie dough mixture into the prepared baking pan, pressing it down evenly to form a solid base layer.
Add Marshmallows: Sprinkle the 1 cup of mini marshmallows evenly over the cookie dough layer.
Top Layer: Drop the remaining cookie dough in small pieces over the marshmallow layer. Gently spread it out as best you can to cover the marshmallows. It’s okay if it’s not perfectly even – some marshmallow will peek through.
Add Toppings: Sprinkle the extra chocolate chips and mini marshmallows over the top for an extra-gooey, decadent finish.

Phase 4: Bake to Perfection

Bake: Place the pan in the preheated oven and bake for 25-30 minutes. The top should be golden brown, and a toothpick inserted into the center (avoiding a marshmallow pocket) should come out clean or with a few moist crumbs.
Cool in Pan: Let the bars cool in the pan on a wire rack for about 10 minutes.

Phase 5: Slice and Serve

Lift and Cool Completely: If you used parchment, lift the entire block of bars out of the pan using the overhang. Transfer to a wire rack to cool completely before slicing.
Slice and Enjoy: Once completely cool, slice into squares and serve. Enjoy with a cold glass of milk!

Pro Tips & Easy Variations for Your S’mores Bars

• Don’t Overmix: Overmixing the dough can lead to tough, dense bars. Mix just until the ingredients are combined.
• Use Parchment Paper: Lining your pan with parchment paper with overhang makes it incredibly easy to lift the bars out cleanly for perfect slicing.
• Dark Chocolate Version: Swap the semi-sweet or milk chocolate chips for dark chocolate chips for a richer, less sweet flavor.
• Add Nuts: For extra crunch, fold in ½ cup of chopped walnuts or pecans along with the chocolate chips.
• Peanut Butter S’mores: Swirl in ½ cup of creamy peanut butter into the dough for a delicious peanut butter cup s’mores variation.
• Flavored Marshmallows: Experiment with flavored marshmallows like chocolate, strawberry, or even toasted coconut marshmallows for a fun twist.

Serving Suggestions for the Ultimate Treat

These s’mores cookie bars are wonderful on their own, but they’re even better with a tall glass of cold milk. Serve them warm with a scoop of vanilla ice cream for an extra-decadent dessert. They’re perfect for summer barbecues, birthday parties, bake sales, or any time you need a crowd-pleasing treat.

Nutrition Information

(Approximate per bar, based on 12-16 bars) Calories: 420, Fat: 20g, Carbohydrates: 55g, Protein: 5g, Sugar: 35g, Fiber: 2g. A rich, indulgent dessert. Values will vary based on specific ingredients.

Storage & Make-Ahead Instructions

• Store at Room Temperature: Store leftover bars in an airtight container at room temperature for up to 5 days.
• Refrigerate: For longer storage, you can keep them in the refrigerator for up to a week.
• Freeze: These bars freeze beautifully! Wrap them tightly in plastic wrap and then foil, or place in a freezer-safe container, for up to 3 months. Thaw at room temperature.

Your S’mores Cookie Bars Questions Answered

1. Can I make these bars ahead of time?
   • Yes! They are perfect for making ahead. Store them in an airtight container and they’ll stay fresh and delicious for several days. They’re great for meal prep or for bringing to parties.
2. Can I use regular-sized marshmallows instead of mini?
   • Mini marshmallows are recommended because they distribute more evenly throughout the bars. If you only have regular-sized, chop them into smaller pieces before adding.
3. My bars seem undercooked in the middle. What should I do?
   • Because of the marshmallow layer, the center can sometimes be tricky. Ensure your oven is fully preheated and bake until the top is golden. A toothpick test in the cookie part (avoiding a marshmallow pocket) should come out clean. Letting them cool completely in the pan also helps them set.
4. Can I add a chocolate drizzle?
   • Absolutely! Melt some extra chocolate chips with a tiny bit of coconut oil and drizzle it over the cooled bars for an extra-special touch.
5. Can I make these gluten-free?
   • You can try substituting the all-purpose flour with a 1:1 gluten-free baking flour blend. Also, ensure you use gluten-free graham crackers.

More Incredible S’mores-Inspired Dessert Recipes to Try

If you love these s’mores bars, you’ll adore our other delicious s’mores-inspired creations. Our S’mores Chocolate Cake is a showstopper.

The Story Behind This Beloved Campfire Classic, Reinvented

S’mores Cookie Bars are a beautiful tribute to the nostalgic joy of a classic campfire treat. This recipe takes the simple, beloved combination of graham crackers, chocolate, and toasted marshmallow and transforms it into an easy, shareable dessert that captures all that magic. It’s the kind of treat that brings people together, evoking memories of summer nights and cozy gatherings. With its chewy cookie base, gooey marshmallow pockets, and rich chocolate in every bite, it’s a reminder that the most comforting desserts often come from the simplest, most cherished flavors. This wonderfully delicious and crowd-pleasing recipe is inspired by the version shared on Chef and Press.

Pin This Irresistible Recipe For Your Next Gathering!

These s’mores cookie bars will be the first to disappear from any dessert table. Save this image to your “Dessert Bars” or “Cookie Recipes” Pinterest board so you always have this easy, delicious recipe ready. Did you make these gooey, perfect bars? We’d love to see your creation – tag us in your photos!