As a child, summer meant one thing: the joy of sitting around a campfire with family, roasting marshmallows until they were golden brown and gooey. There’s something magical about the combination of toasted marshmallows, chocolate, and graham crackers, bringing an undeniable sense of comfort and nostalgia. However, not everyone has access to a campfire or enjoys the mess that often comes with s’mores. That’s where this simple, delightful recipe comes in—a way to enjoy the classic campfire treat without the hassle. This S mores cookie bars easy-to-make s’mores cookie bar brings together the best of s’mores with the ease of a cookie bar, and the best part? You don’t need a campfire to enjoy it!
This s mores cookie bar recipe is perfect for beginner cooks—it’s approachable, doesn’t require any advanced baking skills, and results in an irresistible, gooey treat. The combination of sweet chocolate, soft marshmallows, and a crisp graham cracker base makes it a versatile, crowd-pleasing dessert for any occasion.

Why This S mores cookie bars is Special
S mores cookie bars are a delightful blend of the classic campfire dessert and the timeless appeal of a chocolate chip cookie. This S mores cookie bars recipe is special because it eliminates the mess of traditional s’mores while maintaining all the comforting flavors that everyone loves. The graham cracker base provides a sturdy, crunchy foundation that balances the chewy cookie dough and marshmallows. After baking, the warm cookie bars are topped with melting pieces of Hershey’s chocolate for that authentic s’mores experience.
What makes this recipe so appealing to beginner cooks is its simplicity. With just a few ingredients and straightforward steps, it’s easy to prepare and bake without feeling overwhelmed. Plus, these bars are highly customizable—you can adjust the amount of marshmallows or chocolate according to your personal preference, making this a fun recipe to experiment with.
Ingredients and Preparation
To make these s’mores cookie bars, you’ll need a few staple ingredients, many of which you might already have in your kitchen. Let’s break them down:
- Graham crackers: These provide the signature crunchy base for your bars. They’re essential for giving the bars that familiar s’mores taste.
- Unsalted butter: Butter brings richness and moisture to the cookie dough. It also helps bind the ingredients together and gives the bars their tender, chewy texture.
- Granulated sugar and light brown sugar: A combination of both sugars ensures the perfect balance of sweetness. The granulated sugar helps with structure, while the brown sugar adds moisture and a slight caramel flavor.
- Eggs: Eggs are crucial for binding the dough and giving it structure, while adding to the bars’ overall richness.
- Vanilla extract: Adds a warm, aromatic flavor that complements the sweetness of the cookies and the chocolate.
- All-purpose flour: The main dry ingredient in the dough, providing structure and texture. It also helps absorb the moisture from the butter and eggs.
- Salt and baking soda: These ingredients help balance the sweetness of the bars and allow the dough to rise slightly during baking.
- Semi-sweet chocolate chips: These are folded into the dough, creating pockets of rich, melty chocolate throughout the bars.
- Mini marshmallows: These provide that gooey, marshmallow goodness that is key to a s’mores-inspired dessert.
- Hershey’s Milk Chocolate Bars: The chocolate bars are broken into pieces and placed on top of the cookie bars once they’re baked, allowing them to melt slightly and form a decadent, rich topping.
Step-by-Step Instructions
Step 1: Preheat your oven to 375°F (190°C). Prepare a 13×9-inch baking pan by lining it with parchment paper, allowing a 2-inch overhang on the sides to make it easier to lift the bars out once baked.
Step 2: Break the graham crackers into pieces and layer them evenly on the bottom of the pan. You may need to break them further to ensure the entire bottom is covered.
Step 3: In the bowl of an electric mixer, cream together the unsalted butter, granulated sugar, and light brown sugar until light and fluffy. This will take about 3-5 minutes, and it’s an important step for achieving the right texture.
Step 4: Add the eggs one at a time, followed by the vanilla extract. Mix until well incorporated.
Step 5: In a separate bowl, whisk together the all-purpose flour, salt, and baking soda. Gradually add this dry mixture to the wet ingredients, mixing just until combined.
Step 6: Fold in the semi-sweet chocolate chips and mini marshmallows, ensuring they’re evenly distributed throughout the dough.
Step 7: Spread the cookie dough evenly over the graham crackers, pressing it down gently to create an even layer. If you like, you can add a few extra mini marshmallows on top for that toasted effect.
Step 8: Bake the bars at 375°F for 25-30 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean. If the dough starts to brown too quickly, cover the pan with aluminum foil to prevent overbaking.
Step 9: Once the bars are baked, remove them from the oven and immediately place pieces of the Hershey’s chocolate bars on top. Let the chocolate melt slightly before cooling.
Step 10: Allow the bars to cool for 20-30 minutes before lifting them out of the pan using the parchment paper and cutting into squares.

Beginner Tips and Notes
- Overbaking Alert: Be cautious not to overbake these bars. They should be slightly underbaked in the center for that gooey, chewy texture. If you’re unsure, it’s better to slightly underbake than to overdo it.
- Marshmallow Placement: If you want extra toasted marshmallows on top, add them during the last 5 minutes of baking to prevent them from burning.
- Pan Type: If you’re using a glass pan instead of a metal one, you may need to adjust the baking time as glass tends to retain heat more, causing the bars to bake faster. Keep an eye on the bars to ensure they don’t brown too quickly.
- Storing Leftovers: These bars are best enjoyed fresh, but you can store leftovers in an airtight container at room temperature for up to 3 days. If you want to preserve the texture of the chocolate topping, refrigerate them.
Serving Suggestions
These S mores cookie bars are perfect on their own, but you can elevate the experience by pairing them with a scoop of vanilla ice cream or a drizzle of chocolate syrup. For a refreshing twist, serve with fresh berries or a light whipped cream to balance out the richness.
If you have leftovers, they’re great for picnics, school lunches, or after-dinner treats. Simply wrap them tightly in plastic wrap or store them in a covered container, and enjoy them over the next few days.
Conclusion
Whether you’re an experienced baker or a beginner just starting to explore the world of desserts, these S mores cookie bars are a must-try recipe. They’re easy to make, deliciously gooey, and perfect for any occasion. Don’t forget to share your experience with this recipe in the comments below. We’d love to hear how your cookie bars turned out and if you added any fun variations to the classic treat. Happy baking!
FAQ About S mores cookie bars
1. Can I make S mores cookie bars ahead of time?
Yes! You can prepare and bake these bars ahead of time. Just store them in an airtight container at room temperature for up to 3 days, or refrigerate them if you prefer the chocolate to set.
2. What if I don’t have graham crackers?
If you don’t have graham crackers, you can substitute with digestive biscuits or another crunchy cookie. The flavor will be slightly different but still delicious!
3. How do I prevent the marshmallows from burning while baking?
To avoid burning the marshmallows, add them during the last 5 minutes of baking. This will give them time to toast without becoming overly charred.
More Relevant Recipes
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S mores cookie bars
- Total Time: 45 minutes
- Yield: 12–16 bars 1x
- Diet: Vegetarian
Description
S mores cookie bars combine graham crackers, chocolate chip cookie dough, marshmallows, and Hershey’s chocolate for a gooey, delicious treat.
Ingredients
- 7–8 graham crackers (full sheets)
- 1 cup unsalted butter (room temperature)
- ¾ cup granulated sugar
- ¾ cup light brown sugar
- 2 large eggs
- 2 tsp vanilla extract
- 3 cups all-purpose flour
- 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 (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 on the sides.
- Place graham crackers in a layer covering the full pan, breaking the crackers to fit as needed.
- In a mixer, cream together the butter, granulated sugar, and light brown sugar until light and fluffy.
- Add the eggs one at a time, followed by the vanilla extract. Mix until incorporated.
- In a separate bowl, whisk together the flour, salt, and baking soda. Gradually add this to the wet ingredients, mixing until just combined.
- Fold in the chocolate chips and mini marshmallows, ensuring an even distribution.
- Spread the dough evenly on top of the graham crackers and press it flat. Optionally, add extra marshmallows on top.
- Bake at 375°F for 25-30 minutes or until golden brown, and a toothpick comes out clean from the center. Cover with foil if the cookie dough browns too quickly.
- Remove from oven and immediately place chocolate bar pieces on top. Let the chocolate melt slightly.
- Cool for 20-30 minutes before lifting bars out of the pan and cutting them into squares.
Notes
- To avoid overbaking, slightly underbake the center for a gooey texture.
- If using a glass pan, monitor the bars more closely as they may bake faster.
- If the marshmallows begin to burn, add them in the last 5 minutes of baking.
- Store leftover bars in an airtight container at room temperature or refrigerate them for firmer chocolate.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 245 kcal
- Sugar: 18g
- Sodium: 145mg
- Fat: 11g
- Saturated Fat: 7g
- Unsaturated Fat: 4g
- Trans Fat: 0.3g
- Carbohydrates: 34g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 34mg
