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Do you love the classic taste of s’mores but want a fun twist? I’ve got just the treat for you—S’mores Cookie Bars! These bars are soft, chewy, and packed with all the s’mores flavors you crave. Whether you’re a baking pro or a beginner, my step-by-step guide makes it easy to whip up this delightful sweet treat. Let’s dive in and transform your kitchen into a s’mores paradise!
Why I Love This Recipe
- Deliciously Indulgent: These S’mores Cookie Bars combine the classic flavors of s’mores with a chewy cookie texture, making them a delightful treat for any occasion.
- Easy to Make: With simple ingredients and straightforward steps, these bars come together quickly, perfect for both baking novices and seasoned pros.
- Customizable: Feel free to mix in your favorite chocolate or add nuts for an extra crunch. The recipe is versatile and can be tailored to suit your taste.
- Great for Sharing: Cut them into bars and share with friends or family. They are perfect for parties, gatherings, or just a cozy night in!
Ingredients
List of Ingredients
To make S’mores Cookie Bars, gather these simple ingredients:
– 1 ½ cups all-purpose flour
– ½ teaspoon baking soda
– ½ teaspoon salt
– ½ cup unsalted butter, softened
– ½ cup brown sugar, packed
– ½ cup granulated sugar
– 1 large egg
– 1 teaspoon vanilla extract
– 1 cup semi-sweet chocolate chips
– 1 cup mini marshmallows
– 1 cup graham cracker crumbs
These ingredients create a soft and chewy base that is rich in flavor.
Optional Ingredients for Customization
Feel free to add some fun twists to your bars:
– Chopped nuts (like walnuts or pecans)
– Different chocolate types (milk, dark, or white chocolate)
– Peanut butter chips for extra creaminess
These options help you tailor the bars to your taste.
Equipment Needed for Preparation
You will need a few key tools to make this recipe easy:
– A 9×9-inch baking pan
– Parchment paper (for easy removal)
– Mixing bowls (medium and large)
– A whisk for mixing dry ingredients
– A spatula for folding in chocolate and graham crackers
Having the right tools makes the process smooth and enjoyable.

Step-by-Step Instructions
Preheating the Oven
Start by preheating your oven to 350°F (175°C). This temperature makes sure the cookie bars bake evenly. While waiting, you can get your other ingredients ready.
Preparing the Baking Pan
Next, grab a 9×9-inch baking pan. Grease it with butter or line it with parchment paper. This helps the bars come out easily after baking. A clean pan means less mess for you!
Mixing the Batter
In a medium bowl, whisk together 1 ½ cups of all-purpose flour, ½ teaspoon of baking soda, and ½ teaspoon of salt. Set this bowl aside for later. In a large bowl, cream together ½ cup of softened unsalted butter, ½ cup of brown sugar, and ½ cup of granulated sugar. Mix until it’s light and fluffy, about 2-3 minutes. Add in 1 large egg and 1 teaspoon of vanilla extract. Mix again until fully combined.
Assembling the Layers
Now, take the flour mixture and gradually add it to the butter mixture. Mix until just combined. Don’t overmix! Gently fold in 1 cup of semi-sweet chocolate chips and 1 cup of graham cracker crumbs. Save a handful of both for the top later. Spread half of the cookie batter evenly in your baking pan. Press it down to form a nice base. Sprinkle 1 cup of mini marshmallows over this base. Then, add the reserved chocolate chips and graham cracker crumbs on top. Spoon the rest of the cookie batter over the marshmallows and spread it out gently.
Baking and Cooling
Put the pan in your preheated oven. Bake for 25-30 minutes or until the edges turn golden brown and the center is set. When done, take the pan out and let it cool completely before slicing into bars. Enjoy the sweet smell while you wait!
Tips & Tricks
Common Baking Mistakes to Avoid
Baking can be tricky. Here are some mistakes to watch for:
– Overmixing the Batter: Mix until just combined. Too much mixing makes bars tough.
– Not Measuring Ingredients: Use a dry measuring cup for flour. Too much flour can ruin the bars.
– Skipping the Parchment Paper: Lining the pan helps you remove the bars easily.
– Opening the Oven Door: Avoid this during baking. It can cause the bars to sink.
How to Achieve the Perfect Texture
The texture of your S’mores Cookie Bars matters. Aim for a soft, chewy center with crispy edges. Here are some tips:
– Use Room Temperature Butter: This helps the butter mix well with sugars.
– Cream the Butter and Sugars Well: This creates air, making the bars light.
– Watch Baking Time: Check the bars at 25 minutes. They should be golden at the edges.
– Cool Completely Before Slicing: This helps the bars set and makes slicing easier.
Serving Suggestions for S’mores Cookie Bars
Serving your S’mores Cookie Bars can be fun! Here are some ideas:
– Warm Bars: Serve them warm with extra mini marshmallows and chocolate chips on top.
– Ice Cream Pairing: Add a scoop of vanilla ice cream for a creamy treat.
– Garnish with Graham Cracker Crumbs: This adds texture and enhances the s’mores flavor.
– Serve with Milk: A glass of cold milk pairs perfectly with these sweet bars.
Pro Tips
- Use Room Temperature Ingredients: Ensure your butter and egg are at room temperature before mixing. This helps create a smoother batter and contributes to the overall texture of the bars.
- Don’t Overbake: Keep an eye on your cookie bars while baking. They should be golden around the edges but still soft in the center. They will continue to firm up as they cool.
- Customize Your Mix-Ins: Feel free to add different types of chocolate or nuts to the cookie batter. This is a great way to personalize your s’mores bars to your taste!
- Store Properly: Once cooled, store your cookie bars in an airtight container at room temperature for up to a week. For longer storage, consider freezing them.
Variations
Gluten-Free Version Using Alternative Flours
You can make these cookie bars gluten-free by swapping the all-purpose flour. Use almond flour or oat flour instead. Both flours add flavor and keep the bars soft. You might need to adjust the amount slightly. Start with the same amount and see how the dough feels.
Adding Additional Mix-ins (Nuts, Different Chocolates)
Think about adding your favorite nuts like walnuts or pecans. They add crunch and flavor. You can also mix in different types of chocolate. Try using dark chocolate chips or white chocolate. These swaps create unique tastes that make your bars special.
Creative Flavor Swaps (Peanut Butter, Caramel)
For a twist, add peanut butter to the dough. Just mix in half a cup for a nutty flavor. You can also drizzle caramel over the top before baking. This creates a rich, sweet layer that pairs well with chocolate. Explore these options and find your favorite flavor combo.
Storage Info
Best Methods for Storing Leftover Bars
To keep your S’mores Cookie Bars fresh, first let them cool completely. Slice them into bars and place them in an airtight container. Use parchment paper between layers to prevent sticking. Store them at room temperature for about 3 days. If you want them to last longer, refrigeration works too, just make sure they stay covered.
Freezing S’mores Cookie Bars for Later
Freezing is a great way to save your delicious bars. After they cool, slice them and wrap each bar in plastic wrap. Then, place them in a freezer-safe bag. They can stay in the freezer for up to 3 months. When you want one, just take it out and let it thaw at room temperature.
Reheating Tips for Optimal Enjoyment
To enjoy your S’mores Cookie Bars warm, preheat your oven to 350°F (175°C). Place the bars on a baking sheet and heat them for about 5-10 minutes. This helps the chocolate melt a bit and makes them gooey again. You can also microwave a bar for about 15-20 seconds. Just keep an eye on it so it doesn’t get too hot. Enjoy the warm, melty goodness!
FAQs
Can I make S’mores Cookie Bars ahead of time?
Yes, you can make S’mores Cookie Bars ahead of time. After baking, let them cool completely. Then, wrap them tightly in plastic wrap. Store them in the fridge for up to a week. You can also freeze them for longer storage. Just cut them into bars before freezing. Thaw them in the fridge when you’re ready to enjoy.
What can I substitute for mini marshmallows?
If you don’t have mini marshmallows, you can use marshmallow fluff. Spread a thin layer on the batter before baking. Another option is to use large marshmallows and cut them into smaller pieces. You can also try using caramel or chocolate sauce for a different flavor.
How do I know when the bars are done baking?
The bars are done when the edges turn golden brown. The center should feel set and not jiggly. You can also check with a toothpick. Insert it into the middle; it should come out mostly clean with a few crumbs.
Can I use different types of chocolate?
Absolutely! You can use dark chocolate or milk chocolate. White chocolate also works well for a sweeter taste. Feel free to mix different types for a fun twist. Just keep in mind that the flavors will change with your choice.
What is the origin of S’mores?
S’mores date back to the early 1900s. The first known recipe appeared in a Girl Scouts cookbook in 1927. The name “S’mores” comes from “some more,” as people wanted more after trying them. They combine chocolate, marshmallows, and graham crackers, creating a delicious treat loved by many.
You’ve learned all about making delicious S’mores Cookie Bars. We covered key ingredients and helpful tools. Step-by-step, you now know how to bake and cool these treats. I shared tips to avoid mistakes and ensure great texture. You can even try fun variations or save leftovers for later.
Baking is about joy and creativity. Enjoy every bite and impress your friend
S’mores Cookie Bars
Delicious cookie bars combining the classic flavors of s'mores with chocolate, marshmallows, and graham crackers.
Prep Time 15 minutes mins
Cook Time 30 minutes mins
Total Time 45 minutes mins
Course Dessert
Cuisine American
Servings 16
Calories 200 kcal
- 1.5 cups all-purpose flour
- 0.5 teaspoon baking soda
- 0.5 teaspoon salt
- 0.5 cup unsalted butter, softened
- 0.5 cup brown sugar, packed
- 0.5 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 cup semi-sweet chocolate chips
- 1 cup mini marshmallows
- 1 cup graham cracker crumbs
Preheat your oven to 350°F (175°C). Grease or line a 9x9-inch baking pan with parchment paper for easy removal.
In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
In a large mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy (about 2-3 minutes).
Add the egg and vanilla extract to the butter mixture and mix until fully combined.
Gradually add in the flour mixture and mix until just combined. Avoid overmixing.
Fold in the chocolate chips and graham cracker crumbs, saving a handful of both for topping later.
Spread half of the cookie batter evenly into the prepared baking pan, pressing it down to create a base.
Sprinkle the mini marshmallows evenly over the first layer, followed by the reserved chocolate chips and graham cracker crumbs.
Spoon the remaining cookie batter over the marshmallow layer and spread it out gently to cover as best as possible.
Bake in the preheated oven for 25-30 minutes, or until the edges are golden brown and the center is set.
Remove from the oven and let it cool completely in the pan before slicing into bars.
Serve warm with an additional sprinkle of mini marshmallows and chocolate chips on top, and consider pairing with a scoop of vanilla ice cream for an extra indulgent treat.
Keyword cookie bars, dessert, s'mores
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