There is nothing quite like the nostalgic taste of a campfire s’more. The combination of crunchy graham crackers, gooey marshmallows, and melted chocolate is a classic for a reason. These S’mores Cookie Bars take all those beloved flavors and pack them into a convenient, portable treat that you can enjoy any time of the year without needing a bonfire.

These bars feature a buttery graham cracker cookie dough that serves as both the base and the topping. Inside, you will find a thick layer of melted chocolate and toasted marshmallows. They are chewy, sweet, and incredibly satisfying. Whether you are hosting a summer barbecue or looking for a cozy winter dessert, these cookie bars are sure to be a massive hit with kids and adults alike.

Recipe Information

Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Servings: 16 bars
Difficulty Level: Easy

Nutrition Information

Calories per serving: 285 kcal
Protein: 3g
Carbohydrates: 42g
Fat: 12g
Fiber: 1g
Sugar: 26g
Sodium: 145mg

Why Make This S’mores Cookie Bars

You should make these bars because they offer the perfect balance of textures. You get the crunch from the graham cracker crumbs mixed into the dough and the soft pull of the melted marshmallows. Unlike traditional s’mores, these bars are much less messy to eat, making them ideal for parties, lunchboxes, or bake sales.

Another great reason to whip up a batch is the simplicity of the ingredients. You likely already have most of these staples in your pantry. It is a quick recipe that delivers high-impact flavor with very little effort. Plus, baking them in a single pan means cleanup is a breeze compared to making individual cookies.

How to Make S’mores Cookie Bars

Creating these decadent bars is a straightforward process that involves layering. You will start by making a specialized cookie dough, then build the “sandwich” inside your baking pan to ensure every bite is filled with chocolatey goodness.

Ingredients

1/2 cup butter, softened
3/4 cup granulated sugar
1 large egg
1 teaspoon vanilla extract
1 1/3 cups all-purpose flour
1 cup graham cracker crumbs (about 7-8 full sheets)
1 teaspoon baking powder
1/4 teaspoon salt
2 cups mini marshmallows
1 1/2 cups milk chocolate chips (or broken Hershey’s bars)

Directions

Step 1: Preheat and Prepare

Preheat your oven to 350°F (175°C). Grease an 8×8 inch square baking pan with butter or non-stick spray. For even easier removal, line the pan with parchment paper, leaving an overhang on the sides.

Step 2: Cream the Butter and Sugar

In a large mixing bowl, beat the softened butter and granulated sugar together until the mixture is light and fluffy. This usually takes about 2 to 3 minutes with a hand mixer or stand mixer.

Step 3: Add Wet Ingredients

Add the egg and the vanilla extract to the butter mixture. Beat again until everything is well combined and smooth.

Step 4: Mix Dry Ingredients

In a separate medium bowl, whisk together the all-purpose flour, graham cracker crumbs, baking powder, and salt. Slowly add these dry ingredients to the wet ingredients, mixing on low speed until a soft dough forms.

Step 5: Layer the Base

Divide the dough into two equal halves. Press one half of the dough firmly into the bottom of your prepared baking pan to create an even layer. This will be the sturdy base for your s’mores.

Step 6: Add the Filling

Spread the chocolate chips (or chocolate bar pieces) evenly over the bottom dough layer. Top the chocolate with an even layer of the mini marshmallows. Press them down slightly so they stay in place.

Step 7: Top with Remaining Dough

Take the remaining dough and flatten small pieces of it with your hands. Place these pieces over the top of the marshmallows. It is okay if some marshmallows are still peeking through; the dough will spread as it bakes.

Step 8: Bake and Cool

Place the pan in the oven and bake for 20 to 25 minutes, or until the top is lightly golden brown. Remove from the oven and let the bars cool completely in the pan before slicing. This helps the marshmallow and chocolate set.

How to Serve S’mores Cookie Bars

These bars are best served at room temperature if you want clean, neat squares. However, if you cannot wait, serving them slightly warm makes for a wonderfully gooey experience. Pair a bar with a tall glass of cold milk or a scoop of vanilla bean ice cream for a truly indulgent dessert. If you are feeling extra fancy, drizzle a little extra melted chocolate over the top before serving.

How to Store S’mores Cookie Bars

Store your S’mores Cookie Bars in an airtight container at room temperature for up to 5 days. If you need to stack them, place a sheet of parchment paper between the layers to prevent the marshmallows from sticking. You can also freeze these bars for up to 3 months. Just thaw them at room temperature for an hour before eating.

Expert Tips for Perfect S’mores Cookie Bars

To get the best results, make sure your butter is truly softened at room temperature, not melted. If the butter is too hot, the dough will be greasy. Another tip is to use a heavy-bottomed glass or a measuring cup to press the bottom layer of dough firmly into the pan; this ensures the bars don’t crumble when you cut them. If you want a toasted marshmallow flavor, you can briefly broil the bars for 30-60 seconds at the very end of baking, but watch them closely so they don’t burn!

Delicious Variations

You can easily customize this recipe to suit your taste. Try using dark chocolate chips for a less sweet, richer flavor, or add a layer of peanut butter over the bottom dough for a “Fluffernutter” twist. For a bit of saltiness, sprinkle a pinch of flaky sea salt over the chocolate layer. You can also mix in some chopped walnuts or pecans to the dough for an added crunch.

Frequently Asked Questions

Q: Can I use marshmallow fluff instead of mini marshmallows?

Yes, you can use marshmallow fluff, but it tends to disappear into the dough more than whole marshmallows do. If using fluff, use about 1 cup and spread it carefully over the chocolate.

Q: How do I make my own graham cracker crumbs?

Place graham cracker sheets into a large plastic bag and crush them with a rolling pin until they turn into fine crumbs. You can also use a food processor for a faster, more uniform texture.

Q: Can I double this recipe for a larger crowd?

Absolutely! You can double the ingredients and bake them in a 9×13 inch pan. The baking time may increase by 5 to 10 minutes, so keep an eye on the color of the crust.

Q: Why are my bars falling apart when I cut them?

The most common reason is cutting them while they are still too hot. The marshmallows and chocolate need time to firm up as they cool to hold the structure of the bar together.

Q: Do I have to use milk chocolate?

While milk chocolate provides that classic s’mores taste, you can use semi-sweet, dark, or even white chocolate. It all depends on your personal preference!

Conclusion

S’mores Cookie Bars are the ultimate crowd-pleasing dessert. They bring all the joy of a summer night by the fire right into your kitchen. With their simple preparation and irresistible flavor, they are destined to become a staple in your baking rotation. Give them a try today and enjoy a little slice of campfire heaven!