S’mores Cookie Bars

These delectable S’mores Cookie Bars bring together the best parts of a classic campfire treat—graham crackers, chocolate, and marshmallows—in one chewy, oven-baked dessert. Made with a rich cookie dough base infused with graham cracker crumbs, melted chocolate bars, and gooey mini marshmallows, this easy recipe is perfect for summer gatherings or cozy nights in.

Nut Free, Soy Free

My latest s’mores creation is here and this may be my favorite creation yet… which is saying a lot if you know how freakin’ OBSESSED I’ve been with my No Bake S’mores Bars since I first created them years ago.

These S’mores Cookie Bars take everything you love about the nostalgic fireside treat, but transformed into a decadent, shareable dessert that’s easy to make in your own kitchen—no flames required.

With buttery graham cracker cookie dough, gooey marshmallows, and layers of melty chocolate, these bars are a crowd-pleaser for both kids and adults. Whether you’re baking for a BBQ, potluck, or just because, this is the kind of treat that disappears fast!

These S’mores Cookie Bars are…

• The best cookie bar ever
• Freakin’ delicious
• Everything you love about s’mores and classic cookie dough combined

Ingredients Used to Make This Recipe

1. Salted Butter adds rich, creamy flavor and keeps the cookie bars moist and tender. Using salted butter also enhances the overall flavor balance.
2. White sugar contributes to the sweetness and helps create a soft, chewy texture in the cookie dough.
3. Brown sugar adds a deeper, caramel-like sweetness and a touch of moisture, which complements the graham cracker flavor.
4. Vanilla extract boosts the cookie dough’s warm, sweet notes and enhances the flavor of the marshmallows and chocolate.
5. Eggs bind the dough together and provide structure and richness. I have not tested an egg-free version!
6. Baking soda & baking powder are the leavening agents used to help the cookie bars rise just enough to stay light while still being dense and chewy.
7. All-purpose flour is the classic flour used when baking because it provides structure and stability to the cookie dough. I haven’t tested any substitutions yet.
8. Graham cracker crumbs are the key to that signature s’mores flavor! These crumbs add a hint of crunch and a warm, toasty taste. To make, pulse graham crackers in a food processor or high-powered blender.
9. Mini marshmallows toast up gooey and golden during baking, mimicking the classic roasted marshmallow in every bite. While marhsmallows can “disappear” when baked, you still get more of a chewy, marshmallow taste in these bars.
10. Chocolate bars melt into rich, sweet layers between the dough and marshmallows, just like in a traditional s’mores.

Kitchen Tools Needed to Make S’mores Cookie Bars

• 8×8-inch baking dish
• Parchment paper
• Mixing bowls
• Handheld mixer or stand mixer
• Measuring cups and spoons
• Rubber spatula
• Knife (for slicing)

How to Make These S’mores Cookie Bars

1. Preheat the oven to 350°F and line an 8×8-inch baking dish with parchment paper.
2. Cream the butter, sugars, and vanilla in a large bowl using a handheld mixer until the mixture is smooth and fluffy.
3. Add the eggs, one at a time, mixing well after each addition.
4. Mix in the dry ingredients by starting with the baking soda, baking powder, salt, and 1 cup of flour. Beat until just combined, then mix in the remaining flour.
5. Add the graham cracker crumbs and mix until incorporated into the dough.
6. Assemble the bars by pressing half of the cookie dough into the bottom of the prepared baking dish.
7. Layer the marshmallows evenly over the dough, followed by the chocolate bars. Break the chocolate into smaller pieces if needed to fit.
8. Top with the remaining dough, pressing gently to cover the marshmallow and chocolate layers.
9. Bake for 30 minutes, or until the top is golden brown and set.
10. Let the bars cool for at least 1 hour before slicing to allow the layers to set properly.

FAQs About This Recipe

Can I use unsalted butter instead of salted?

Yes, just add an extra 1/4 teaspoon of salt to the dough to balance the flavor.

What kind of chocolate works best?

Classic Hershey’s bars are traditional for that true s’mores taste, but any milk chocolate or even semi-sweet chocolate bars will work. You can also substitute 2 cups (milk) chocolate chips if you do not have full bars.

Can I use an egg substitute?

This recipe has not yet been tested to be egg-free.

Do I need to chill the dough before baking?

Nope! This recipe is designed to go straight into the oven once assembled—perfect for quick prep.

How do I store leftover cookie bars?

Store leftover s’mores cookie bars in an airtight container at room temperature for up to 4 days. They also taste delicious when stored in the refrigerator, especially if your kitchen is warm during the summer. For longer storage, freeze these bars for up to 2 months.

Other S’mores-Inspired Recipes You May Love:

• No Bake S’mores Bars
• S’mores Protein Bars

Whether you’re reliving childhood memories or just craving something sweet and gooey, these S’mores Cookie Bars are a must-bake. They’re easy, crowd-pleasing, and bring all the joy of a campfire treat—no fire pit required.

Print

Don’t Forget to PIN these S’mores Cookie Bars

XO