As I stood in my kitchen, the sweet scent of melting chocolate wafted through the air, instantly transporting me to those cozy campfire evenings spent roasting marshmallows. Enter the Gooey Graham Cracker S’mores Brownie Bars—a delightful twist on the classic treat that combines chewy, fudgy brownies with all the nostalgic flavors of s’mores. This recipe not only satisfies my chocolate cravings but also promises a quick prep time, making it a fantastic option for last-minute gatherings, or a cozy dessert after dinner. Plus, it’s easily adaptable to suit dietary preferences, ensuring everyone can indulge. Curious to learn how to whip up this irresistible dessert? Let’s dive in!

Why Are S’mores Brownie Bars a Must-Try?
Unforgettable Flavor: These Gooey Graham Cracker S’mores Brownie Bars combine rich chocolate, chewy marshmallows, and crunchy graham crackers for an explosion of taste in every bite. Quick Preparation: Perfect for those busy weeknights, this recipe can be whipped up in no time, letting you indulge without the fuss. Adaptable Options: Whether you’re vegan or gluten-free, this recipe easily accommodates dietary needs, offering substitutions that don’t compromise on flavor. Family-Friendly Fun: Kids and adults alike will love helping to make and devour these delicious bars—ideal for weekend baking sessions. If you’re a fan of delightful desserts, be sure to check out my Harvest Marble Bars for another crowd-pleasing option!
Graham Cracker S’mores Brownie Bars Ingredients
For the Brownie Base
- Butter – Provides richness and moisture; substitute with dairy-free butter for a vegan option.
- Semi-sweet chocolate chips – Adds deep chocolate flavor; vegan chocolate chips can be used for dairy-free versions.
- Eggs – Contributes to structure and moisture; for vegan options, substitute with flax eggs or other egg replacers.
- Vanilla extract – Enhances sweetness and flavor.
- Granulated sugar – Adds sweetness and moisture; can be swapped with coconut sugar for a lower glycemic index.
- All-purpose flour – Gives structure; substitute with a gluten-free flour blend for gluten-free options.
- Baking soda – Provides leavening.
- Ground cinnamon – Adds warmth and flavor.
For the Toppings
- Miniature marshmallows – Adds chewiness and sweetness; look for vegan marshmallows as a substitute.
- Hershey Bars – Provides additional chocolate layers and flavor to elevate the richness of the bars.
- Graham crackers – Provides crunch and that iconic S’mores taste; use gluten-free graham crackers for a gluten-free version.
These Graham Cracker S’mores Brownie Bars are sure to delight your taste buds and become a new family favorite!
Step‑by‑Step Instructions for Graham Cracker S’mores Brownie Bars
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This ensures that your Graham Cracker S’mores Brownie Bars bake evenly and develop that delicious, fudgy texture. While the oven heats up, gather your ingredients and greased 9×13-inch baking pan, so you’re ready to move on quickly.
Step 2: Melt Butter and Chocolate
In a large mixing bowl, combine the butter and semi-sweet chocolate chips. Microwave them together in 30-second increments, stirring after each interval until the mixture is smooth and glossy, typically taking about 1 to 2 minutes. This melted mixture will form the rich base for your brownie bars.
Step 3: Incorporate Eggs and Vanilla
Once your chocolate and butter mixture is melted and combined, stir in the vanilla extract and eggs. Mix these ingredients vigorously until they are fully blended and the batter is shiny. This step is crucial for providing your Graham Cracker S’mores Brownie Bars with the perfect structure and gooeyness.
Step 4: Mix in Dry Ingredients
Now it’s time to add the dry ingredients: granulated sugar, all-purpose flour, baking soda, and ground cinnamon. Gently fold these ingredients into the wet mixture until just combined. Be careful not to overmix, as this will keep your bars light and chewy with that decadent chocolate flavor shining through.
Step 5: Add Chocolate and Prepare to Bake
Fold in 1½ chopped Hershey Bars into your batter for extra chocolatey delight. Pour the brownie mixture into the greased baking pan, spreading it evenly with a spatula. Ensure the mixture reaches the corners of the pan for consistent baking, creating perfectly shaped Graham Cracker S’mores Brownie Bars.
Step 6: Bake the Brownies
Place the pan in your preheated oven and bake for about 20 minutes. Keep an eye out for visual cues; the edges should be set, while the center will look slightly underbaked. A toothpick inserted into the center should come out with a few moist crumbs, indicating a fudgy texture.
Step 7: Cool and Add Toppings
Once baked, remove the brownies from the oven and let them cool briefly. Before they cool completely, sprinkle the remaining chopped Hershey Bars, crumbled graham crackers, and miniature marshmallows on top. This layer will become the gooey, sweet topping for your delightful bars.
Step 8: Broil for Toasty Goodness
Transfer your pan back into the oven and set to broil. Broil for just 1 to 2 minutes, keeping a close watch, as the marshmallows can burn quickly. Once they are beautifully toasted and golden brown, remove the pan from the oven and let it cool for a few minutes.
Step 9: Slice and Serve
After cooling slightly, use a sharp knife to cut your Graham Cracker S’mores Brownie Bars into squares. Allow them to cool further if desired, then serve warm or at room temperature. These ooey-gooey treats are perfect for sharing and will definitely satisfy your sweet tooth!

Make Ahead Options
These Graham Cracker S’mores Brownie Bars are perfect for meal prepping, allowing you to enjoy a delicious dessert with minimal last-minute effort! You can mix the brownie batter up to 24 hours in advance; simply cover it tightly and refrigerate to maintain freshness. Additionally, you can pre-chop the Hershey Bars and graham crackers to save even more time before baking. When you’re ready to bake, just pour the chilled batter into the baking pan, sprinkle the toppings on, and broil as directed. This way, you’ll have your gooey, chocolatey bars ready to impress in no time, making busy weeknights a little sweeter!
Storage Tips for Graham Cracker S’mores Brownie Bars
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Room Temperature: Keep your Graham Cracker S’mores Brownie Bars in a cool, dry place for up to 2 days in an airtight container. They’ll stay deliciously chewy without refrigeration.
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Fridge: Store in an airtight container in the refrigerator for up to 4 days. This helps maintain their freshness while allowing the flavors to meld beautifully.
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Freezer: For longer storage, wrap individual bars in plastic wrap and then aluminum foil, freezing them for up to 2 months. Thaw overnight in the fridge before enjoying.
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Reheating: To enjoy your bars warm and gooey again, reheat in the oven at 300°F (150°C) for 5-10 minutes, or microwave for 15-20 seconds. Enjoy the comfort of these delightful treats!
What to Serve with Gooey Graham Cracker S’mores Brownie Bars
Indulge in a delightful dessert experience by pairing these sweet, fudgy brownie bars with delicious accompaniments that enhance their rich flavors.
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Creamy Vanilla Ice Cream: A scoop of this classic treat adds a cool, creamy contrast to the warm, gooey bars, elevating your dessert experience.
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Whipped Cream Delight: Light and fluffy, whipped cream provides a sweet, airy counterpart, making each bite a heavenly sensation.
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Fresh Berries: Strawberries or raspberries add a burst of tartness and freshness, beautifully balancing the rich chocolate and sweetness of the bars.
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Chocolate Milkshake: The nostalgic flavors of a thick milkshake perfectly complement the brownie bars, perfect for a cozy evening treat.
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Coffee or Espresso: A strong brew enhances the chocolate flavor, creating a rich flavor profile, perfect for those who appreciate a sweet and bitter contrast.
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Peanut Butter Drizzle: Drizzling creamy peanut butter over the bars adds a nutty richness, taking these s’mores brownie bars to the next level of indulgence.
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S’mores Dip: Pairing your bars with a warm s’mores dip makes for a fun sharing experience; scoop with graham crackers for extra crunch!
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Caramel Sauce: A drizzle of warm caramel immediately adds a sweet dimension, amplifying the gooey factor and giving a beautiful presentation.
The possibilities are endless, and each pairing brings out different aspects of the flavors in your Graham Cracker S’mores Brownie Bars!
Expert Tips for Graham Cracker S’mores Brownie Bars
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Control the Heat: Be cautious while broiling the marshmallows, as they can burn in seconds. Keep the oven door slightly ajar for better visibility.
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Perfect Melt: Make sure your chocolate chips and butter are completely melted and combined before adding other ingredients to prevent lumps in your brownie batter.
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Don’t Overmix: When combining the wet and dry ingredients, mix gently. Overmixing can lead to dense brownies rather than the desired chewy texture.
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Customize with Toppings: Feel free to experiment with different chocolate bars or add nuts for extra crunch. These additions can elevate your Graham Cracker S’mores Brownie Bars to new flavor heights.
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Storage Secrets: To maintain the gooeyness of your bars, place parchment paper between layers when storing in an airtight container. This prevents sticking and keeps them fresh.
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Served Best: For an even more indulgent treat, serve warm with a scoop of vanilla ice cream or a dollop of whipped cream. It’s the perfect pairing for your brownies!
Graham Cracker S’mores Brownie Bars Variations
Feel free to unleash your creativity and customize these bars to your taste buds’ delight!
- Dairy-Free: Substitute butter with dairy-free butter and use vegan chocolate chips for a completely dairy-free treat. It’s just as delicious and satisfying!
- Flour-Free: For a gluten-free version, swap all-purpose flour with a gluten-free flour blend. Your bars will still come out wonderfully chewy!
- Nutty Crunch: Add a handful of chopped nuts, like walnuts or pecans, to the batter for an extra crunch with every bite. The nuttiness complements the chocolate beautifully.
- Flavor Boost: Mix in a teaspoon of espresso powder for a coffee kick that intensifies the chocolate flavor. Your taste buds will thank you!
- Peanut Butter Swirl: Layer peanut butter or almond butter on top of the brownie batter before baking for a nutty infusion. The creamy contrast is heavenly!
- Minty Fresh: Swap out semi-sweet chocolate for mint chocolate chips for a refreshing twist. Each bite transports you to a cool summer evening!
- Fruit Fusion: Add diced strawberries, cherries, or banana slices into the brownie batter for a surprising burst of fruity flavor. It lightens things up deliciously.
- S’mores Twist: For extra ooey-gooey goodness, layer chocolate and marshmallows between two brownie layers before baking. This style creates a real S’mores experience!
Whether experimenting with these variations or sticking to the classic recipe, I promise these bars will become a family favorite. If you love indulgent desserts, don’t forget to check out my scrumptious Harvest Marble Bars for more sweet inspirations!

Graham Cracker S’mores Brownie Bars Recipe FAQs
How do I select the right marshmallows?
Absolutely! When choosing miniature marshmallows for your Graham Cracker S’mores Brownie Bars, look for ones that are fresh and fluffy. Avoid any that have dark spots or grainy textures, as these can indicate age. If you’re seeking a vegan option, brands like Dandies offer great alternatives that melt beautifully.
How long can I store these brownie bars?
Very! You can keep your Graham Cracker S’mores Brownie Bars in an airtight container at room temperature for up to 2 days. For longer freshness, store them in the fridge for up to 4 days. Remember, if you love that gooey texture, you can warm them slightly before serving!
Can I freeze Graham Cracker S’mores Brownie Bars?
Absolutely! To freeze your bars, wrap each one tightly in plastic wrap followed by aluminum foil. This helps preserve their moisture and flavor. You can freeze them for up to 3 months. When you’re ready to enjoy, simply thaw them overnight in the fridge before indulging.
What if my brownies are too dense or dry?
If you find that your Graham Cracker S’mores Brownie Bars are too dense, it might be due to overmixing the batter or baking them too long. Always mix wet and dry ingredients just until combined to keep the structure light. Check for doneness a couple of minutes early, aiming for a toothpick that comes out with moist crumbs.
Are there any allergy considerations for this recipe?
Definitely! If you’re baking for someone with allergies, it’s important to substitute ingredients accordingly. For a nut allergy, ensure your graham crackers and chocolate are nut-free. Additionally, you can use dairy-free butter, vegan chocolate chips, and egg replacers to make these bars safe for those with dairy or egg allergies.

Graham Cracker S'mores Brownie Bars: Gooey Chocolate Bliss
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking pan.
- In a large mixing bowl, combine the butter and chocolate chips. Microwave together in 30-second increments until smooth, about 1 to 2 minutes.
- Stir in the vanilla extract and eggs until blended and shiny.
- Add the dry ingredients: sugar, flour, baking soda, and cinnamon. Fold until just combined.
- Fold in 1½ chopped Hershey Bars, then pour the mixture into the greased pan, spreading evenly.
- Bake for about 20 minutes until edges are set and center looks slightly underbaked. A toothpick should come out with a few moist crumbs.
- Let the brownies cool slightly, then sprinkle with remaining chopped Hershey Bars, graham crackers, and marshmallows.
- Broil for 1 to 2 minutes until marshmallows are golden brown. Watch closely to prevent burning.
- Cool slightly, then cut into squares and serve warm or at room temperature.

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