Gooey S’mores Cookie Bars

Indulge in the quintessential taste of summer any time of the year with these delightful S’mores Cookie Bars. This exceptional recipe transforms the beloved campfire classic into a convenient, shareable, and utterly irresistible dessert bar. Featuring a rich, buttery cookie base loaded with generous chocolate chunks and crunchy graham cracker pieces, these bars are crowned with a luscious layer of gooey marshmallow fluff. The result is a harmonious blend of textures and flavors that captures the magic of traditional s’mores without the need for a flickering flame. Perfect for gatherings, parties, or simply a sweet treat at home, these homemade S’mores bars are remarkably easy to prepare and guaranteed to be a crowd-pleaser.

The enchanting combination of a sweet, chewy cookie, the satisfying crunch of graham crackers, and the sticky, melt-in-your-mouth marshmallow creme creates a dessert bar that is both comforting and exciting. Every bite offers a symphony of flavors – the deep cocoa notes, the honey-kissed crackers, and the sweet, airy marshmallow. With minimal effort and straightforward steps, you can bake a batch of these extraordinary S’mores cookie bars that are perfect for sharing with friends and family, making any occasion feel like a cozy summer evening.

S’mores Cookie Bars: Capturing the Essence of Summer Year-Round

S’mores hold a special place in our hearts as the ultimate nostalgic summer treat, cherished for their simple yet irresistible combination of toasted marshmallow, melted chocolate, and crisp graham crackers. This S’mores Cookie Bars recipe offers a brilliant twist, allowing you to enjoy all those beloved flavors in a more accessible and mess-free cookie bar format. Forget the charcoal and sticky fingers of a campfire; these bars bring the essence of s’mores directly to your kitchen, making them a fantastic dessert for any season, not just when the weather permits outdoor adventures.

Crafted with a selection of high-quality, readily available ingredients, this recipe ensures a rich, flavorful, and wonderfully chewy dessert. We use real butter for a tender base, a blend of granulated and brown sugars for depth and moisture, eggs and vanilla extract to enhance the overall profile, and a balanced mix of all-purpose flour, baking powder, and baking soda for the perfect rise and texture. The star additions are generous semi-sweet chocolate chunks, which melt beautifully into pockets of bliss, and crunchy graham cracker pieces, providing that essential textural contrast. Finally, a generous layer of marshmallow fluff creates the signature gooey top. Together, these ingredients create a sensational cookie bar that’s ideal for parties, potlucks, or simply satisfying a craving for something truly special.

Why You’ll Adore This Easy S’mores Cookie Bar Recipe

There are countless reasons to fall in love with these easy-to-make S’mores Cookie Bars. They offer all the beloved elements of a traditional s’more with added convenience and versatility, making them a fantastic addition to any baker’s repertoire. Here’s why this recipe stands out:

• No Campfire Required! One of the biggest advantages of these cookie bars is eliminating the need for a campfire. Whether the weather is uncooperative, you lack access to a fire pit, or you simply prefer an indoor baking project, these oven-baked S’mores provide all the classic flavor without the smoke or logistical challenges.
• Utilizes Basic, Accessible Ingredients. You don’t need exotic or hard-to-find items for this recipe. Most of the ingredients, like flour, sugar, butter, and eggs, are pantry staples you likely already have on hand. This means less time grocery shopping and more time baking, allowing you to whip up a batch on a whim.
• Effortlessly Delicious. This recipe truly brings you all the deliciousness of s’mores with just a fraction of the traditional effort. By baking all the components into a single, cohesive bar, you get that perfect ratio of chocolate, graham cracker, and marshmallow in every bite, simplifying serving and enjoyment.
• A Perfect Treat for Any Season. While s’mores are synonymous with summer, these cookie bars transcend seasonal boundaries. Their comforting flavors are welcome year-round, making them an ideal dessert for holidays, gatherings, or just a cozy night in.
• Crowd-Pleasing and Shareable. Cut into squares, these bars are incredibly easy to serve and share, making them a fantastic option for parties, school events, or office potlucks. They’re visually appealing and taste amazing, ensuring they’ll be a hit with everyone.
• Simple to Transport. Unlike individual s’mores that can be messy, these sturdy cookie bars are easy to pack and transport. Whether you’re taking them to a picnic, a friend’s house, or a family reunion, they hold up beautifully.

Essential S’mores Cookie Bar Ingredients

Crafting the perfect S’mores Cookie Bar starts with understanding the role of each ingredient. Here’s a detailed look at what you’ll need and why it matters:

• Unsalted Butter: You’ll need ½ cup of softened, room temperature unsalted butter. Using unsalted butter gives you complete control over the salt content in your recipe, ensuring a rich, pure buttery flavor. Room temperature butter creams beautifully with sugar, creating an airy base for your cookie dough.
• Sugars: This recipe calls for a blend of ¼ cup of granulated sugar and ⅔ cup of packed light brown sugar. Granulated sugar contributes to a slightly crispy edge, while light brown sugar adds moisture, chewiness, and a lovely molasses flavor that complements the s’mores profile.
• Eggs: To bind all the ingredients together and add richness, incorporate 1 large egg and 1 large egg yolk. Ensure both are at room temperature, as this helps them emulsify more effectively with the butter and sugar, leading to a smoother, more consistent dough.
• Vanilla Extract: A crucial flavor enhancer, 1 teaspoon of pure vanilla extract elevates all the other incredible notes in these bars, adding a warm, aromatic depth.
• All-Purpose Flour: The structural backbone of your cookie dough, you’ll need 1 ¾ cups of all-purpose flour. Proper measurement is key here; spoon the flour into your measuring cup and level it off with a straight edge to avoid overpacking, which can result in dry, dense bars.
• Leavening Agents: For the perfect rise and tender texture, include ½ teaspoon of baking powder and ¼ teaspoon of baking soda. These leavening agents react during baking to create air pockets, ensuring your cookie bars are delightfully soft and fluffy.
• Salt: A mere ½ teaspoon of salt plays a vital role in balancing the sweetness of the dough and marshmallow, enhancing all the flavors without making the bars taste salty.
• Semi-Sweet Chocolate Chunks: For those irresistible pockets of melted chocolate, use 4 ounces of semi-sweet chocolate chunks. Chunks melt slower than chips, providing a more decadent, gooey experience in every bite.
• Graham Crackers: To introduce the iconic crunch of s’mores, you’ll need 2 ounces of graham crackers (approximately 4 full crackers). Break these into bite-sized pieces; their texture is essential for the authentic s’mores experience.
• Marshmallow Fluff: A 7-ounce jar of marshmallow fluff (also known as marshmallow creme) is needed for the irresistibly gooey topping. This creates a smooth, melt-in-your-mouth layer that toasts beautifully in the oven, providing that quintessential s’mores finish.

How to Prepare Delicious S’mores Cookie Bars

Creating these delightful S’mores Cookie Bars is a straightforward process, broken down into simple, manageable steps. Follow these instructions carefully to ensure perfectly baked, gooey, and satisfying bars every time.

Preparation Phase

1. Begin by preheating your oven to 350 degrees F (175 degrees C). This ensures the oven is at the correct temperature for even baking from the moment your dish goes in.
2. Next, line an 8×8-inch baking dish with parchment paper. It’s crucial to leave enough overhang on all sides of the parchment paper; this creates “handles” that will make lifting the cooled bars out of the pan incredibly easy later on. Set the prepared pan aside.
3. Finally, prepare your inclusions. Carefully chop the semi-sweet chocolate into desired chunks. Similarly, break the four graham crackers into small, bite-sized pieces. These textures are essential for the ultimate S’mores experience. Set both aside, ready for incorporation into the dough.

Crafting the Cookie Dough

1. In the bowl of a stand mixer fitted with the paddle attachment (or using a large bowl and a hand mixer), combine the softened butter with both the granulated sugar and packed light brown sugar. Beat these on medium speed for 1-2 minutes until the mixture is light, fluffy, and resembles wet sand. This creaming process incorporates air, which contributes to the cookie bars’ tender texture. Remember to scrape down the sides of the bowl with a spatula to ensure all ingredients are fully combined.
2. Add the room temperature large egg, egg yolk, and vanilla extract to the butter-sugar mixture. Continue to beat on medium speed for another 1-2 minutes until everything is well combined and smooth. Again, stop and scrape down the sides of the bowl to ensure no dry spots remain.



3. Reduce the mixer speed to low. Gradually add the all-purpose flour, baking soda, baking powder, and salt to the wet ingredients. Mix until just combined, being careful not to overmix the dough, as this can lead to tough cookie bars. Stop mixing as soon as no streaks of dry flour are visible.
4. With the mixer still on low speed, gently stir in the prepared chocolate chunks and graham cracker pieces. Mix just until they are evenly distributed throughout the dough. For an extra aesthetic touch, you may choose to reserve a small amount of chocolate and graham crackers to sprinkle on top of the marshmallow layer before baking.

Assembling the S’mores Bars

1. Take about ½ to ⅔ of your prepared cookie dough and press it evenly into the bottom of your parchment-lined baking dish. Use your hands or the back of a spoon to compact the dough firmly across the base of the pan, forming a solid cookie layer. Do not press the dough up the sides of the pan.
2. Next, carefully spread the entire jar of marshmallow fluff over the pressed cookie dough layer. Achieve as even a layer as possible. If the marshmallow fluff proves difficult to spread and sticks to your spatula, a helpful tip is to lightly spray your spatula with cooking oil spray; this will create a non-stick surface, making the process much smoother.
3. With the remaining small amount of cookie dough, flatten it into several small, thin discs using your hands. Gently place these flattened dough pieces on top of the marshmallow fluff layer. These cookie dough “patches” will bake down and create a beautiful, textured top, encapsulating the gooey marshmallow.

Baking and Serving

1. Carefully place the baking dish into your preheated oven. Bake for approximately 20 minutes, or until the cookie base is golden brown and the marshmallow topping is lightly toasted and bubbly. Keep an eye on it to prevent over-browning.
2. Once baked, remove the dish from the oven. This next step is crucial for the perfect texture: allow the S’mores Cookie Bars to cool completely for at least 1 hour at room temperature. This cooling time allows the marshmallow and chocolate to set properly, preventing them from being too runny and ensuring clean cuts.
3. After cooling, use the parchment paper overhang to lift the entire slab of S’mores bars out of the pan. Place it on a cutting board, then slice into desired squares. Serve these delightful bars and savor the amazing combination of flavors and textures!

Smores Cookie Bars Recipe

Smores Cookie Bars are made with a buttery cookie base, chocolate chunks and graham crackers, then topped with a layer of gooey marshmallow fluff. This smores bar recipe combines all the flavors of s’mores into a delicious cookie bar that is easy to make and perfect for sharing with friends and family.

Recipe Details

• Course: Cookie Bars, Dessert
• Cuisine: American
• Keyword: Smores Cookie Bars
• Prep Time: 15 minutes
• Cook Time: 20 minutes
• Total Time: 35 minutes
• Servings: 9 bars
• Calories: 420 kcal
• Author: Jessica & Nellie

Ingredients

• ½ cup unsalted butter, softened room temperature
• ¼ cup granulated sugar
• ⅔ cup light brown sugar, packed
• 1 large egg, room temperature
• 1 large egg yolk, room temperature
• 1 tsp vanilla extract
• 1 ¾ cup all purpose flour
• ½ tsp baking soda
• ¼ tsp baking powder
• ½ tsp salt
• 4 oz semi-sweet chocolate chunks
• 2 oz (4 crackers) graham crackers, broken into bite size pieces
• 7 oz marshmallow fluff

Instructions

1. Prep: Preheat the oven to 350 degrees F. Line the inside of an 8×8 baking dish with parchment paper, making sure to leave enough hanging over the sides to make the bars easier to remove later. Set the pan aside.
2. Chop up the chocolate into chunks, as well as the four graham crackers. You want them both broken up into bite sized pieces. Set aside for later use.
3. Make cookie dough: In a bowl of a stand mixer, beat the butter and both sugars on medium speed for 1-2 minutes or until the mixture looks like wet sand. Scrape down the sides of the bowl. Add in the egg, egg yolk, and vanilla extract. Beat on medium speed for 1-2 minutes or until combined. Scrape down the sides of the bowl again.
4. Mix in the all purpose flour, baking soda, baking powder, and salt on low speed until combined. Stir in the chocolate chunks and graham cracker pieces on low speed until combined. If desired, you can set some chocolate and crackers aside for topping later.
5. Assembly: Press about half of the cookie dough into the prepared baking dish. Compact the dough onto the bottom of the pan but not up along the sides.
6. Spread the marshmallow fluff over the top as evenly as you can. If it keeps sticking to your spatula, spray the spatula with cooking oil to prevent this. Take the small amount of the remaining cookie dough and flatten it into a few discs using your hands. Place the dough on top of the marshmallow fluff.
7. Bake: Bake in the preheated oven for 20 minutes or until the cookie is golden brown.
8. Let the dessert cool for about 1 hour, letting the marshmallow and chocolate cool and set completely. Lift the bars out of the pan using the parchment paper overhang. Cut into squares, serve, and enjoy!

Notes

These S’mores cookie bars will stay fresh for up to 5 days if stored in an airtight container at room temperature.

For longer storage, place them in an airtight container or freezer bag and freeze for up to 3 months. Thaw at room temperature before serving.

Nutrition

Serving: 1 bar | Calories: 420kcal | Carbohydrates: 65g | Protein: 5g | Fat: 17g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.4g | Cholesterol: 67mg | Sodium: 207mg | Potassium: 162mg | Fiber: 2g | Sugar: 38g | Vitamin A: 375IU | Calcium: 40mg | Iron: 3mg

How Long Do S’mores Cookie Bars Stay Fresh?

One of the best qualities of these delightful S’mores Cookie Bars is their excellent shelf life, allowing you to enjoy them for several days. To maintain their freshness and gooey texture, it is essential to store them properly. Once cooled completely, transfer your S’mores bars to an airtight container. At room temperature, they will remain delicious for up to 1 week. This generous timeframe means you can bake a batch and savor a sweet treat each evening without worry. For ultimate indulgence, you might even warm them slightly in the microwave for a few seconds before serving to bring back that freshly baked, melty goodness.

Tips for a Sweeter Dessert Bar Experience

If you have a pronounced sweet tooth or simply want to mimic the traditional s’mores flavor even more closely, there’s an easy adjustment you can make to this recipe. Consider swapping out the semi-sweet chocolate chunks for milk chocolate chunks. This change will significantly boost the sweetness and bring the flavor profile much closer to classic s’mores, which typically feature a milk chocolate Hershey’s bar. In fact, if you’re having trouble finding chocolate chunks, feel free to use chopped pieces of your favorite milk chocolate candy bar or even standard milk chocolate chips. Any of these options will melt beautifully and contribute to an even sweeter, more authentic s’mores taste. Dark chocolate chunks would also be an excellent alternative for those who prefer a less sweet, more intense chocolate flavor, offering a sophisticated twist on the classic.

Can I Substitute Marshmallows for Marshmallow Fluff?

While the idea of using whole marshmallows instead of marshmallow fluff might seem appealing for a more “traditional” s’mores look, it’s generally not recommended for this specific bar recipe. The primary reason is that marshmallows behave very differently than fluff when heated. Whole marshmallows expand significantly more and at a faster rate, which could cause them to puff up excessively, potentially overflowing your baking pan and creating a sticky mess in your oven. Marshmallow fluff, on the other hand, creates a more controlled and stable gooey layer that sets well within the cookie bar structure. For best results and to avoid any baking mishaps, stick with marshmallow fluff or marshmallow creme as specified in the recipe.

Using Pre-Made Cookie Dough for S’mores Cookie Bars

Absolutely, pre-made cookie dough is a convenient option if you’re looking to significantly reduce preparation time for these S’mores cookie bars. It’s a fantastic shortcut for busy days or when you want a quick dessert without the hassle of making dough from scratch. When opting for store-bought dough, ensure it’s fresh and well within its expiration date for the best taste and texture. You can typically find various types of pre-made cookie dough, such as sugar cookie or chocolate chip cookie dough, which would work wonderfully here. Simply omit the steps for preparing the homemade cookie dough and proceed directly to pressing the pre-made dough into your prepared baking dish. You may need to adjust baking times slightly depending on the specific brand and thickness of the dough, so keep a close eye on your oven.

Marshmallow Fluff vs. Marshmallow Crème: What’s the Difference?

Many bakers wonder about the distinction between marshmallow fluff and marshmallow crème, especially since they appear quite similar. In truth, they are incredibly close in both appearance and taste, often leading to them being used interchangeably in recipes without any noticeable difference in the final product. However, there is a subtle distinction in their composition. Marshmallow crème frequently contains additional stabilizing ingredients like cream of tartar and sometimes xanthan gum, which can give it a slightly firmer texture or a bit more stability over time. Marshmallow fluff, while essentially the same delicious, aerated sugar concoction, often omits these extra stabilizers. For all practical purposes in baking, especially for a recipe like S’mores Cookie Bars where it’s a gooey topping, you can confidently interchange marshmallow fluff and marshmallow crème without impacting the success or deliciousness of your dessert.

Adjusting for Mini Marshmallows in S’mores Cookie Bars

If you’re eager to incorporate mini marshmallows into your S’mores cookie bars instead of the fluff, some adjustments are indeed necessary. Unlike marshmallow fluff, which is spread on top, mini marshmallows should be mixed directly into the cookie dough before baking. This helps them to melt and create pockets of gooey marshmallow throughout the bar rather than creating a separate top layer. Simply fold the mini marshmallows into the prepared cookie dough along with your chocolate chunks and graham cracker pieces. Then, proceed with pressing the dough into the pan and baking as usual. Keep in mind that while this method still delivers fantastic flavor, the overall texture of the cookie bars will be slightly different from those made with marshmallow fluff. The melted mini marshmallows will integrate more into the cookie, resulting in a less distinct, pillowy top layer and more of an internal gooeyness.

Explore More Irresistible Cookie Bar Recipes

If you’ve fallen in love with the convenience and deliciousness of S’mores Cookie Bars, you’re in for a treat! The world of cookie bars is vast and full of exciting flavors waiting to be discovered. Here are some more incredible cookie bar recipes that are sure to become new favorites in your baking rotation. Each offers a unique twist on the classic bar format, perfect for any craving or occasion:

• PEANUT BUTTER COOKIE BARS
• TWIX COOKIE BARS
• PUMPKIN SNICKERDOODLE COOKIE BARS
• REESE’S COOKIE BARS
• BUTTERFINGER COOKIE BARS
• EASY PEANUT CARAMEL COOKIE BARS
• FUDGY OATMEAL COOKIE BARS
• TAGALONG COOKIE BARS
• OATMEAL CHOCOLATE CHIP COOKIE BARS
• GINGERBREAD COOKIE BARS
• MINT CHOCOLATE CHIP COOKIE BARS
• SNICKERDOODLE COOKIE BARS
• SUGAR COOKIE BARS
• HALLOWEEN SUGAR COOKIE BARS
• CHRISTMAS SUGAR COOKIE BARS
• LEMON SUGAR COOKIE BARS
• BUTTERSCOTCH PRETZEL COOKIE BARS
• PEPPERMINT COOKIE BARS

These S’mores Cookie Bars are truly a fast, simple, and incredibly satisfying way to enjoy the beloved flavors of a favorite summertime dessert. This baked s’mores treat brilliantly combines amazing chocolate chunks, crunchy graham cracker pieces, and fluffy marshmallow into a single, irresistible cookie bar, delivering an explosion of flavor in every bite. They embody convenience without compromising on that classic, nostalgic taste, making them a perfect addition to any dessert table.

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