Introduction
There's something undeniably comforting about s'mores. The combination of graham crackers, melted chocolate, and toasted marshmallows evokes memories of campfires and summer nights. But what if you could enjoy that nostalgic flavor in a chewy, cookie-bar form? That's where s'mores cookie bars come into play.
This recipe brings together all the classic elements of s'mores in a simple, baked treat that’s perfect for sharing. Whether you're hosting a gathering or just satisfying a sweet tooth, these cookie bars promise to delight. With layers of graham cracker crumbs, gooey marshmallows, and rich chocolate, each bite is a little piece of heaven.
Let's dive into the ingredients and get started on making these delicious s'mores cookie bars that will have everyone coming back for seconds.
Ingredients
- 1 cup unsalted butter, softened
- 3/4 cup granulated sugar
- 3/4 cup brown sugar, packed
- 2 1/2 cups all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 1/2 cups graham cracker crumbs
- 2 cups semi-sweet chocolate chips
- 2 cups mini marshmallows
Directions & Preparation
- Preheat your oven to 350°F (175°C) and line a 9×13 inch baking pan with parchment paper, leaving some overhang for easy removal later.
- In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 2-3 minutes.
- Add the eggs one at a time, mixing well after each addition. Then, stir in the vanilla extract.
- In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
- Gradually add the dry ingredients to the wet mixture, mixing until just combined.
- Fold in the graham cracker crumbs, chocolate chips, and 1 cup of mini marshmallows, ensuring an even distribution.
- Spread half of the cookie dough into the prepared baking pan, pressing it down firmly to create an even layer.
- Sprinkle the remaining mini marshmallows and chocolate chips over the first layer, then dollop the remaining cookie dough on top. Spread it gently to cover as much of the marshmallows and chocolate as possible.
- Bake in the preheated oven for 25-30 minutes, or until the edges are golden brown and the center is set. A toothpick inserted should come out with a few moist crumbs.
- Remove from the oven and allow the bars to cool in the pan for at least 15 minutes before using the parchment paper to lift them out. Let them cool completely on a wire rack before cutting into squares.

FAQs
What if my cookie bars are too crumbly?
Make sure you properly measure your flour and avoid overmixing the dough. Adding a touch more butter can also help bind them.
Can I use different types of chocolate in this recipe?
Yes, feel free to mix in milk chocolate or white chocolate chips for a different flavor profile.
What should I do if my marshmallows didn't melt properly?
Ensure you've baked the bars long enough. If they appear undercooked, return them to the oven for a few more minutes.
Can I add nuts to the s'mores cookie bars?
Absolutely! Chopped pecans or walnuts can add a nice crunch and flavor.
What if I want a more gooey center?
Try reducing the baking time by a few minutes to keep the marshmallows from fully setting.
Is it possible to make this recipe gluten-free?
You can substitute the all-purpose flour with a gluten-free flour blend, but results may vary.
Conclusion
S’mores cookie bars are not just a dessert; they are a nostalgic treat that brings the joy of campfire gatherings to your kitchen. With their gooey marshmallows and rich chocolate, they are sure to be a hit with family and friends.
So next time you're in the mood for something sweet, whip up a batch of these cookie bars and enjoy the delightful flavors of s'mores in every bite. Happy baking!
Recipe Card

S’MORES COOKIE BARS Recipe for a Cozy Treat
Ingredients
Method
- Preheat your oven to 350°F (175°C) and line a 9x13 inch baking pan with parchment paper, leaving some overhang for easy removal later.
- In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 2-3 minutes.
- Add the eggs one at a time, mixing well after each addition. Then, stir in the vanilla extract.
- In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
- Gradually add the dry ingredients to the wet mixture, mixing until just combined.
- Fold in the graham cracker crumbs, chocolate chips, and 1 cup of mini marshmallows, ensuring an even distribution.
- Spread half of the cookie dough into the prepared baking pan, pressing it down firmly to create an even layer.
- Sprinkle the remaining mini marshmallows and chocolate chips over the first layer, then dollop the remaining cookie dough on top. Spread it gently to cover as much of the marshmallows and chocolate as possible.
- Bake in the preheated oven for 25-30 minutes, or until the edges are golden brown and the center is set. A toothpick inserted should come out with a few moist crumbs.
- Remove from the oven and allow the bars to cool in the pan for at least 15 minutes before using the parchment paper to lift them out. Let them cool completely on a wire rack before cutting into squares.
Notes
Additional serving suggestions: pair with a crisp salad, garlic bread, or roasted seasonal vegetables for balance.
For make-ahead, prep components separately and assemble just before heating to preserve texture.
Taste and adjust with acid (lemon/vinegar) and salt right at the end to wake up flavors.