Name: S'mores Cookie Bars: Your New Favorite Homemade Treat
Prep time: 15 min
Cook time: 30 min
Total time: 55 min
Ingredients: 1 cup unsalted butter (Adds rich flavor and moisture; substitute with coconut oil for a dairy-free option.); 1 cup brown sugar (Provides sweetness and moisture; light or dark brown sugar can be used interchangeably.); 1/2 cup granulated sugar (Sweetens the bars; coconut sugar can be used as an alternative.); 2 large eggs (Binds the ingredients together and adds structure.); 2 teaspoons vanilla extract (Enhances the overall flavor; pure vanilla yields the best results.); 2 cups all-purpose flour (The main structure ingredient; gluten-free flour can be used as a substitute.); 1 teaspoon baking soda (Essential for leavening; no direct substitute recommended.); 1/2 teaspoon salt (Elevates flavors; sea salt can be used for a unique taste.); 1 cup graham cracker crumbs (Adds texture and flavor; crushed digestive biscuits can work too.); 1 cup chocolate chips (Contributes sweetness and richness; dark chocolate chips can be used for a twist.); 1 cup mini marshmallows (Provides the signature gooeyness; flavored marshmallows can add a fun twist.); extra chocolate chips and marshmallows (Top as desired to customize the S'mores cookie bars.)

As I walked through the park last weekend, the sweet, smoky aroma of a campfire reminded me of long summer nights, melted marshmallows, and laughter echoing around the flames. That nostalgia inspired me to create these S’mores Cookie Bars—a delightful twist on the classic treat that captures those cherished memories in a convenient form! These gooey bars bring together crunchy graham crackers, rich chocolate, and fluffy marshmallows, bringing an instant smile to anyone who takes a bite. Not only are they incredibly easy to whip up, but they’re also perfect for sharing at potlucks, picnics, or cozy family gatherings. Curious about how to elevate your dessert game? Let’s dive into this irresistible recipe together!

Why Are These S’mores Cookie Bars Irresistible?

Gooey Goodness: Each bite delivers a warm, melted chocolate and marshmallow experience that’s simply heavenly.

Quick to Make: With just a few easy steps, you’ll have these delicious bars ready to bake in no time!

Customizable Options: Feel free to mix in your favorite nuts or experiment with different types of chocolate for a unique twist.

Memorable Flavor: The combination of graham crackers and marshmallows evokes the joyful spirit of summer campfires in every mouthful.

Perfect for Sharing: Whether it’s at a potluck or a family gathering, these cookie bars are sure to impress your guests. If you love easy desserts, be sure to check out my Sugar Cookie Cheesecake or Pumpkin Pie Cookies for more crowd-pleasing ideas!

S’mores Cookie Bars Ingredients

For the Batter
• Unsalted butter — Adds rich flavor and moisture; substitute with coconut oil for a dairy-free option.
• Brown sugar — Provides sweetness and moisture; you can use light or dark brown sugar interchangeably.
• Granulated sugar — Sweetens the bars; coconut sugar makes a delightful alternative.
• Large eggs — Binds the ingredients together and adds structure; no egg substitute is provided.
• Vanilla extract — Enhances the overall flavor; pure vanilla yields the best results.
• All-purpose flour — The main structure ingredient; try gluten-free all-purpose flour for a substitute.
• Baking soda — Essential for leavening; no direct substitute is recommended.
• Salt — Elevates flavors; consider using sea salt for a unique taste.

For the S’mores Filling
• Graham cracker crumbs — Adds texture and flavor; crushed digestive biscuits work well too.
• Chocolate chips — Contributes sweetness and richness; swap in dark chocolate chips for a twist.
• Mini marshmallows — Provides the signature gooeyness; flavored marshmallows can add a fun twist.
• Extra chocolate chips and marshmallows — Top as you wish to customize this scrumptious S’mores cookie bar.

Step‑by‑Step Instructions for S’mores Cookie Bars

Step 1: Preheat and Prepare
Begin by preheating your oven to 350°F (175°C). Grease a 9×13 inch baking pan or line it with parchment paper for easy removal later. This will ensure your S’mores Cookie Bars can be enjoyed fresh without sticking to the pan. Set the prepared pan aside as you move on to the next steps.

Step 2: Cream the Butters and Sugars
In a large mixing bowl, cream together 1 cup of unsalted butter, 1 cup of brown sugar, and ½ cup of granulated sugar until the mixture is light and fluffy, approximately 3-5 minutes. The sugars will dissolve and create a smooth texture, which is essential for the signature chewiness of your S’mores Cookie Bars.

Step 3: Add Eggs and Vanilla
Next, beat in 2 large eggs one at a time, mixing well after each addition to ensure even incorporation. Stir in 2 teaspoons of pure vanilla extract, blending everything together until smooth. This step is crucial as it builds the structure of the bars while enhancing their delicious flavor.

Step 4: Combine Dry Ingredients
In a separate bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking soda, and ½ teaspoon of salt. Once mixed, gradually add the dry ingredients to the butter mixture. Stir gently until combined, ensuring you don’t overmix, which could toughen your S’mores Cookie Bars.

Step 5: Fold in Graham Cracker Crumbs and Chocolate
With your batter now ready, fold in 1 cup of graham cracker crumbs and 1 cup of chocolate chips until evenly distributed throughout the mixture. This is where the iconic flavors of your S’mores come into play. The flecks of chocolate and crumbly graham crackers will give each bar its delightful texture.

Step 6: Layer the Batter
Spread half of the cookie batter into the prepared pan, smoothing it evenly with a spatula. Sprinkle 1 cup of mini marshmallows on top, allowing that gooey, sweet layer to shine through. Finally, gently spread the remaining batter over the marshmallows, creating a delicious seal of cookie dough that encases the filling.

Step 7: Add Extra Toppings
To create an indulgent finish, top the batter with extra chocolate chips and marshmallows to suit your preferences. Feel free to sprinkle them generously, as they will melt beautifully during baking, contributing to the bars’ signature look and flavor profile.

Step 8: Bake to Perfection
Place your baking pan in the preheated oven and bake for 25-30 minutes. You’re looking for a lovely golden-brown top and a toothpick inserted into the center should come out with moist crumbs, but not wet batter. This visual cue ensures your S’mores Cookie Bars are perfectly baked and ready to cool.

Step 9: Cool and Slice
Once baked, allow the bars to cool in the pan for about 10 minutes before carefully transferring them to a wire rack. Let them cool completely to ensure clean slicing. When ready, cut your S’mores Cookie Bars into squares and indulge in the deliciousness of this fantastic treat!

Expert Tips for S’mores Cookie Bars

Quality Matters: Use a good quality baking pan to ensure even cooking; this prevents burnt edges and undercooked centers.
Don’t Overmix: After adding the dry ingredients, mix just until combined. Overmixing can lead to tough cookie bars instead of soft, chewy ones.
Customize Your Chocolate: Feel free to experiment with various chocolate types, like dark, milk, or even white chocolate, to elevate your S’mores Cookie Bars.
Marshmallow Magic: Add flavored marshmallows for an exciting twist or mix in nuts for added texture. This can create a unique flavor profile.
Cool Before Slicing: Allow the cookie bars to cool completely on a wire rack before slicing. This helps achieve clean edges and prevents gooeyness from making them fall apart.

How to Store and Freeze S’mores Cookie Bars

Room Temperature: Keep your S’mores Cookie Bars in an airtight container at room temperature for up to 5 days. This preserves their soft, chewy texture and delicious flavor.

Fridge: For extended freshness, refrigerate your cookie bars. They can be stored in an airtight container for up to a week, ensuring that gooey goodness stays intact.

Freezer: If you’d like to save some for later, freeze individual bars by wrapping them tightly in plastic wrap, then placing them in a freezer-safe bag. They can stay frozen for up to 3 months.

Reheating: To enjoy your frozen S’mores Cookie Bars, simply thaw at room temperature for a few hours or reheat in the oven at 350°F (175°C) for about 10-15 minutes until warmed through.

Make Ahead Options

These S’mores Cookie Bars are a fantastic option for meal prep, making your life easier on busy weeknights! You can prepare the batter up to 24 hours in advance by mixing all the ingredients and storing it in an airtight container in the refrigerator. For best results, allow the batter to come to room temperature before baking to ensure even cooking. Alternatively, you can also assemble the bars by layering the ingredients in the baking pan ahead of time and refrigerating them for up to 3 days. When you’re ready to enjoy, simply bake them as directed, and know that you’ll serve a delectable dessert that tastes just as fresh and gooey as if you made it that day!

S’mores Cookie Bars Variations

Feel free to get creative with your S’mores Cookie Bars and make them uniquely yours!

Nutty Delight: Add chopped walnuts or pecans to enhance texture and flavor, introducing a satisfying crunch to every bite.
Chocolate Variety: Swap in white chocolate or milk chocolate chips for a sweeter, creamier profile, brightening the traditional flavor in a playful way.
Spiced Up: Mix in a teaspoon of cinnamon for a warm, comforting undertone that complements the chocolate and marshmallows beautifully.
Flavored Marshmallows: Use seasonal or flavored marshmallows like pumpkin spice or strawberry for an unexpected and delightful twist.
Dairy-Free Swap: Substitute unsalted butter with coconut oil for a dairy-free version, ensuring everyone can enjoy these delicious bars.
Cookie Dough Topper: Top the bars with a layer of edible cookie dough before baking for an extra indulgent treat that’s simply irresistible!
Savory Touch: Sprinkle a touch of sea salt on the top before baking to create a perfect sweet and salty balance that elevates the flavor.
Additional Treats: Mix in mini chocolate candies or crushed graham crackers for an extra layer of sweetness and texture, making your bars even more delightful.

Each twist brings something new to the table, just like my Pecan Pie Cookies or Chocolate Chip Cheesecake Cookies, so don’t hesitate to make these S’mores Cookie Bars your own!

What to Serve with S’mores Cookie Bars

Elevate your dessert experience by pairing these gooey treats with delightful side dishes that complement their flavors perfectly.

Vanilla Ice Cream: A classic companion, the creamy sweetness of vanilla ice cream perfectly balances the rich, gooey cookie bars.
Fresh Berries: Plump strawberries or raspberries add a refreshing, tangy contrast that brightens every bite of the sweet cookie bars.
Hot Chocolate: Cozy up with a warm mug of hot chocolate made with rich cocoa, enhancing the chocolaty indulgence of the S’mores Cookie Bars.
Peanut Butter Dip: A luscious peanut butter or Nutella dip creates a nutty flavor profile, providing a delightful contrast to the sweetness of the bars.
Caramel Sauce: Drizzling warm caramel over the bars adds a rich, buttery sweetness, taking the experience to a whole new level.
Coffee: A cup of freshly brewed coffee creates a bittersweet pairing that enhances the flavors of the chocolate and complements the dessert beautifully.
Toasted Coconut Flakes: Sprinkling toasted coconut over the bars introduces a crunchy texture and tropical flair, making each bite uniquely enjoyable.
Graham Cracker Crust Pie: Serve alongside a slice of graham cracker crust pie for a nostalgic theme that echoes the original campfire treat.
S’mores Milkshake: Blend up a thick, chilly milkshake with chocolate, marshmallow, and graham cracker crumbs for a fun, decadent drink to accompany the bars.

S’mores Cookie Bars Recipe FAQs

How do I choose the right ripeness of ingredients, like eggs and butter?
Absolutely! For the best results, use room-temperature eggs and softened butter. It helps create a better emulsion and contributes to a lighter texture in your cookie bars. Simply take your eggs and butter out of the fridge about 30 minutes before you start baking.

How should I store leftover S’mores Cookie Bars?
To keep your S’mores Cookie Bars fresh, store them in an airtight container at room temperature for up to 5 days. If you prefer a longer storage option, refrigerate them in a sealed container, where they can last up to a week. Just make sure they cool completely before sealing!

Can I freeze S’mores Cookie Bars? If so, how?
Yes, you can! To freeze your S’mores Cookie Bars, first allow them to cool completely. Then, wrap individual bars tightly in plastic wrap and place them in a freezer-safe bag or container. They’ll retain their deliciousness for up to 3 months. When you’re ready to enjoy them, thaw at room temperature or reheat in the oven at 350°F (175°C) for 10-15 minutes until warmed through.

What should I do if my cookie bars turn out too dry?
If your S’mores Cookie Bars are dry, it might be due to overbaking or overmixing the dough. To prevent this, make sure to check for doneness a few minutes early and remove them from the oven as soon as the edges are golden and a toothpick comes out with moist crumbs. Mixing the dry ingredients just until combined also helps keep them tender.

Are there any allergies to consider when making S’mores Cookie Bars?
Very! This recipe contains common allergens like eggs, gluten from the flour, and dairy from the butter and chocolate chips. If you’re catering to someone with an allergy, consider substituting gluten-free flour and using dairy-free chocolate chips or coconut oil for a mix that works for everyone. It’s always good to double-check ingredient labels when transitioning to alternative products!

Can I make these S’mores Cookie Bars vegan?
You can absolutely make delightful vegan S’mores Cookie Bars! Substitute the butter with coconut oil, use flax eggs (1 tablespoon ground flaxseed mixed with 2.5 tablespoons water per egg, left to sit for a few minutes until gel-like), and choose dairy-free chocolate chips and marshmallows. Just be sure to keep an eye on baking times, as they may vary slightly!