S’mores Cookie Bars are the ultimate dessert for anyone who loves the irresistible combination of graham crackers, gooey marshmallows, and melty chocolate. These bars offer all the flavor of traditional s’mores, but with a convenient and less messy twist. Whether you’re making them for a summer get-together or a cozy winter treat, these cookie bars are sure to please.

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Why S’mores Cookie Bars Are the Perfect Dessert
S’mores Cookie Bars are the ideal dessert for those who want the taste of s’mores without the hassle of a campfire. They’re easy to make, family-friendly, and perfect for both kids and adults. These cookie bars combine the best elements of s’mores—graham crackers, chocolate, and marshmallows—into a soft, chewy dessert that’s both warm and comforting. Plus, they’re great for baking ahead and sharing at parties, picnics, or potlucks.
Ingredients for S’mores Cookie Bars
To make these gooey cookie bars, you’ll need the following ingredients:
- Graham crackers: Provides a crunchy base layer that mimics the traditional s’mores crust.
- Unsalted butter: Helps create a rich, tender cookie dough.
- Granulated sugar and brown sugar: Adds sweetness and moisture to the dough.
- Eggs: Provides structure and helps bind the ingredients together.
- Vanilla extract: Adds a warm, aromatic flavor that complements the sweetness of the bars.
- All-purpose flour: Forms the main base of the cookie dough.
- Baking soda: Helps the cookie dough rise and become fluffy.
- Salt: Enhances the overall flavor of the cookie dough.
- Semi-sweet chocolate chips: Brings that signature s’mores chocolate flavor.
- Mini marshmallows: These provide the gooey texture and sweet bite in every bite.
- Hershey’s Milk Chocolate Bars: Cut into pieces, these melt over the top of the bars, adding even more indulgent chocolatey goodness.
Alternative Ingredient Suggestions
If you need to make substitutions, consider these options:
- Gluten-free graham crackers: Swap for gluten-free graham crackers if you’re serving someone with dietary restrictions.
- Dairy-free butter: Use dairy-free butter for a lactose-free version.
- Vegan chocolate: Swap the milk chocolate with dairy-free chocolate for a vegan-friendly option.
Step-by-Step Instructions to Make S’mores Cookie Bars
Follow these easy steps to bake your own batch of S’mores Cookie Bars:
- Preheat your oven to 375°F (190°C) and line a 13×9-inch pan with parchment paper, leaving a 2-inch overhang on the sides for easy removal.
- Layer the graham crackers in the bottom of the prepared pan, breaking them as needed to fill the entire surface.
- In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy. Add in the eggs and vanilla extract, mixing until combined.
- In a separate bowl, whisk together the flour, salt, and baking soda. Gradually add this flour mixture to the butter mixture, mixing until just combined.
- Fold in the chocolate chips and mini marshmallows, making sure they’re evenly distributed throughout the dough.
- Spread the dough evenly over the graham crackers in the pan, pressing it down gently.
- Top with additional mini marshmallows if desired, then bake for 25-30 minutes or until the edges are golden brown and a toothpick comes out clean from the center.
- Add Hershey’s chocolate bar pieces on top while the bars are still warm. Let the bars cool for 20-30 minutes before lifting them out of the pan using the parchment paper overhang and slicing them into squares.

Tips & Tricks for Perfect S’mores Cookie Bars
- Don’t overbake: These cookie bars should be slightly underbaked in the center to maintain that gooey, soft texture. Keep an eye on them and test with a toothpick to check for doneness.
- Use parchment paper: It’s much easier to lift the bars out of the pan with parchment paper, especially when the chocolate is still soft and melty.
- Store properly: Keep your S’mores Cookie Bars in an airtight container at room temperature for up to 4 days. If you prefer a firmer texture, store them in the refrigerator.
Pairing Ideas and Variations for S’mores Cookie Bars
These S’mores Cookie Bars can easily be paired with a variety of treats and beverages. Here are some great pairing ideas:
- Serve with a scoop of vanilla ice cream: The creamy ice cream complements the rich, gooey cookie bars.
- Try adding crushed nuts: Chopped pecans or walnuts can add a crunchy texture that contrasts with the softness of the cookie bars.
- Make a spiced version: Add a pinch of cinnamon or nutmeg to the dough for a cozy, spiced flavor that enhances the s’mores theme.
If you’re looking for a gluten-free version, you can substitute gluten-free graham crackers and flour. For a more decadent treat, drizzle some caramel sauce or chocolate syrup over the top.
Seasonal and Party-Friendly S’mores Cookie Bars
S’mores Cookie Bars are perfect for any time of the year, but they’re especially great during the summer months when s’mores are a classic favorite. Serve them at barbecues, picnics, or family gatherings. These bars are also a hit during the holiday season, when people crave sweet treats that bring everyone together.
Conclusion
S’mores Cookie Bars are a delightful twist on the classic campfire treat, bringing the best flavors of graham crackers, chocolate, and marshmallows into a convenient, gooey dessert. Whether you’re serving them at a family gathering, a casual barbecue, or simply craving a sweet treat, these bars are sure to impress. Their perfect balance of textures—crispy graham crackers, soft cookie dough, and melty chocolate—will have everyone coming back for seconds. Easy to make and even easier to enjoy, these S’mores Cookie Bars are a must-try!
FAQ Section
Can I make S’mores Cookie Bars ahead of time?
Yes, you can! These bars store well at room temperature in an airtight container for up to 4 days. For the best texture, store them in the refrigerator, especially if you want the chocolate to set and firm up. They can also be reheated for a few seconds in the microwave for that warm, gooey experience.
Can I use a different type of chocolate for the bars?
Absolutely! While Hershey’s Milk Chocolate Bars are a classic, feel free to experiment with different chocolates. Dark chocolate, peanut butter cups, or even white chocolate chips can provide unique twists to the flavor of your S’mores Cookie Bars.
Are there any alternatives to mini marshmallows?
Yes, you can use large marshmallows, cut into smaller pieces, if mini marshmallows are unavailable. Another option is using marshmallow fluff in the cookie dough to ensure a soft and chewy consistency.
More Relevant Recipes
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S’mores Cookie Bars:
- Prep Time: 15 minutes
- Cook Time: 25-30 minutes
- Total Time: 45-50 minutes
- Yield: 12–16 bars 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Description
S’mores Cookie Bars combine the flavors of traditional s’mores into a gooey, easy-to-make dessert. With layers of graham crackers, chocolate chip cookie dough, and marshmallows topped with melted Hershey’s chocolate, these bars are perfect for any occasion, whether you’re baking for a family gathering or just craving a delicious treat.
Ingredients
- 7–8 graham crackers (full sheets/unbroken rectangles)
- 1 cup unsalted butter (2 sticks), room temperature
- ¾ cup granulated sugar
- ¾ cup light brown sugar, gently packed
- 2 large eggs
- 2 tsp vanilla extract
- 3 cups all-purpose flour (stir, spoon, & level)
- ¾ tsp salt
- ¾ tsp baking soda
- ½ cup semi-sweet chocolate chips
- 1 cup mini marshmallows
- 2 regular-sized Hershey’s Milk Chocolate Bars (1.55oz/43g each), broken into squares
Instructions
- Preheat your oven to 375°F (190°C) and line a 13×9-inch pan with parchment paper, leaving a 2-inch overhang for easy removal.
- Place the graham crackers in a single layer at the bottom of the pan, breaking them as necessary to fill the surface.
- In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy. Add the eggs and vanilla extract, mixing until well combined.
- In a separate bowl, whisk together the flour, salt, and baking soda. Gradually add this mixture to the butter mixture and mix until just combined.
- Fold in the chocolate chips and mini marshmallows.
- Spread the dough evenly over the graham crackers in the pan, pressing it down gently.
- Top with additional mini marshmallows if desired, then bake for 25-30 minutes or until golden brown and a toothpick comes out clean from the center.
- Once out of the oven, immediately place the broken Hershey’s chocolate bar pieces on top while the bars are still warm. Allow the bars to cool for 20-30 minutes before lifting them out of the pan using the parchment paper and slicing them into squares.
Notes
- For a firmer texture, store the bars in the refrigerator after cooling.
- These bars are best enjoyed warm for that gooey texture, but they store well at room temperature for up to 4 days.
- Use parchment paper to easily lift the bars out of the pan.
- Adjust the baking time for a more underbaked or fully baked result based on your texture preference.
Nutrition
- Serving Size: 1 bar
- Calories: 245 kcal
- Sugar: 18g
- Sodium: 145mg
- Fat: 11g
- Saturated Fat: 7g
- Unsaturated Fat: 3g
- Trans Fat: 0.3g
- Carbohydrates: 34g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 34mg
