Smores Brownie Bars Recipe Easy & Gooey Treat

Let’s talk about the perfect marriage of desserts: brownies and s’mores. These Ultimate S’mores Brownie Bars are the gooey, crunchy, and downright irresistible treat you’ve been dreaming of. Imagine layers of graham crackers, rich chocolate brownies, and fluffy marshmallows toasted to golden perfection. It’s like a campfire favorite got all dressed up for a party, and you’re invited!

If you’re craving a dessert that’s easy to make but looks like you spent hours in the kitchen, this recipe is for you. Whether you’re hosting a summer BBQ, having a cozy movie night, or need a sweet gift for a friend, these bars check all the boxes. Trust me, they’ll fly off the plate before you can say, “S’mores!”

The Story Behind These S’mores Brownie Bars

There’s something nostalgic about s’mores, isn’t there? Just saying the word brings back memories of campfires, sticky marshmallow fingers, and that satisfying crunch of graham crackers. Growing up, my family would always make s’mores on summer camping trips. It was the highlight of every evening, huddled around the fire, roasting marshmallows to that perfect golden-brown hue—or, let’s be honest, sometimes setting them on fire accidentally.

As I got older, I wanted to bring that same feeling of joy into my kitchen but with a little twist. Enter: the brownie. Its fudgy richness pairs so perfectly with the sweetness of marshmallows and the crunch of graham crackers. Over time, I fine-tuned this recipe to create the ultimate dessert bar that combines all the best parts of s’mores with a decadent brownie base.

These bars are also perfect for when you want that campfire vibe but don’t have access to an actual fire pit. Plus, they’re great year-round—because, let’s face it, s’mores cravings don’t care about the season.

Ingredients: The Stars of the Recipe

To make the most indulgent S’mores Brownie Bars, you’ll need just a handful of ingredients. Let’s break them down:

  • Graham Crackers: These form the base layer, adding that signature crunch. Look for ones that are sturdy and fresh. If you’re gluten-free, there are excellent GF graham crackers available now!
  • Butter: Melted butter helps bind the graham cracker crust together. Unsalted is best so you can control the saltiness.
  • Brownie Mix: Yes, we’re using a boxed mix! Go for a high-quality mix with a rich chocolate flavor. You can also make brownies from scratch if you prefer.
  • Eggs and Oil: Essential for preparing the brownie batter. Follow the box instructions for measurements.
  • Marshmallows: Mini marshmallows work best here because they melt evenly and create that gooey, toasted layer. You can also use larger marshmallows, but you might need to cut them into smaller pieces.
  • Chocolate Chips: For an extra touch of decadence, sprinkle some semisweet chocolate chips between the layers.

Pro Tip: If you’re feeling fancy, you can add a pinch of cinnamon to the graham cracker crust for a subtle warmth that ties all the flavors together.

Equipment Needed

Here’s what you’ll need to make these delicious brownie bars:

  • 9×13-inch Baking Pan: This size is perfect for creating even layers.
  • Parchment Paper: Makes it much easier to lift the bars out of the pan for cutting.
  • Mixing Bowls: One for the brownie batter and one for the graham cracker crust.
  • Whisk or Spoon: To mix up your brownie batter.
  • Offset Spatula: Handy for spreading out the brownie batter evenly.

No fancy tools required—just the basics you probably already have in your kitchen!

How to Make Ultimate S’mores Brownie Bars

  1. Preheat Your Oven: Set your oven to 350°F (175°C). Line your 9×13-inch pan with parchment paper, leaving some overhang for easy lifting later.
  2. Make the Graham Cracker Crust: Crush graham crackers into fine crumbs (about 1 ½ cups) and mix with ½ cup (115g) of melted butter. Press this mixture firmly into the bottom of your prepared pan.
  3. Prepare the Brownie Batter: Follow the instructions on your brownie mix box. Usually, this involves mixing the powder with eggs, oil, and water. Stir until smooth, but don’t overmix.
  4. Layer It Up: Pour the brownie batter over the graham cracker crust. Use an offset spatula to spread it evenly.
  5. Bake: Bake for 25-30 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
  6. Add Marshmallows: Remove the pan from the oven and immediately top with a layer of mini marshmallows. Turn on your oven’s broiler and return the pan to the oven for 1-2 minutes. Keep a close eye—those marshmallows toast quickly!
  7. Cool and Slice: Let the bars cool completely before lifting them out of the pan using the parchment paper. Cut into squares and enjoy!

Tips for Perfect S’mores Brownie Bars

Here are some tricks to make your bars even better:

  • Don’t Overbake: The brownies should still be slightly fudgy when you pull them out of the oven. Overbaking will make them dry.
  • Keep an Eye on the Marshmallows: The broiler can go from golden to burnt in seconds—don’t walk away!
  • Use a Sharp Knife: When cutting the bars, a sharp knife (cleaned between cuts) will help create neat slices without sticking.

Variations and Adaptations

  • Gluten-Free: Swap the graham crackers for gluten-free ones and check your brownie mix for gluten ingredients.
  • Peanut Butter Lover’s Version: Add a swirl of peanut butter to the brownie batter before baking.
  • Holiday Twist: Use peppermint marshmallows or sprinkle crushed candy canes on top for a festive touch.

I’ve even tried adding a drizzle of caramel sauce on top—absolutely divine!

Serving and Storage Suggestions

These bars are best served slightly warm so the marshmallows are gooey and the chocolate is melty. Pair them with a glass of cold milk or a hot cup of coffee for a delightful treat.

To store, place the bars in an airtight container. They’ll stay fresh at room temperature for up to 3 days or in the fridge for up to a week. If you want to freeze them, wrap each bar individually in plastic wrap and store them in a freezer-safe bag for up to 3 months. Just thaw at room temperature before enjoying.

Nutritional Information and Benefits

While these bars are definitely a treat, they do offer some energy-boosting ingredients. The graham crackers provide fiber, and the chocolate gives you a quick pick-me-up. However, they are best enjoyed in moderation as they’re rich in sugar and fat.

For those with allergies, be mindful of the graham crackers and brownie mix, as they may contain gluten, dairy, or soy.

Conclusion

These Ultimate S’mores Brownie Bars are the perfect way to bring a little campfire magic into your home. With their gooey marshmallow topping, fudgy brownie layer, and crunchy graham cracker base, they’re a dessert that’s hard to resist.

If you give this recipe a try, I’d love to hear about it! Leave a comment below or share your creations on social media. Don’t forget to tag me so I can see your amazing results.

Now, what are you waiting for? Grab your ingredients and get baking—your taste buds will thank you!

FAQs

Can I make these bars ahead of time?

Yes! They taste great the next day. Store them in an airtight container and reheat for a few seconds in the microwave for that fresh-baked feel.

What’s the best way to toast the marshmallows?

The broiler works beautifully, but you can also use a kitchen torch for more control.

Can I use homemade brownie batter?

Absolutely! Just make sure it’s enough to cover the graham cracker base evenly.

Are there any substitutions for eggs in the brownie mix?

You can use flax eggs (1 tablespoon ground flaxseed + 3 tablespoons water per egg) for a vegan option.

Can I double this recipe?

Yes, you can double the ingredients and use a larger pan. Just keep an eye on the baking time as it may take longer.

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
Smores Brownie Bars

Ultimate S’mores Brownie Bars


  • Author: Sarah
  • Total Time: 45 minutes
  • Yield: 12 servings 1x

Description

A gooey, crunchy dessert combining layers of graham crackers, rich chocolate brownies, and toasted marshmallows for the ultimate treat.


Ingredients

Scale
  • 1 ½ cups graham cracker crumbs
  • ½ cup (115g) melted butter, unsalted
  • 1 box brownie mix
  • Eggs (as per brownie mix instructions)
  • Oil (as per brownie mix instructions)
  • Water (as per brownie mix instructions)
  • 2 cups mini marshmallows
  • ½ cup semisweet chocolate chips

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13-inch pan with parchment paper, leaving some overhang for easy lifting.
  2. Crush graham crackers into fine crumbs and mix with melted butter. Press this mixture firmly into the bottom of the prepared pan.
  3. Prepare the brownie batter according to the instructions on the box. Stir until smooth, but don’t overmix.
  4. Pour the brownie batter over the graham cracker crust and spread evenly using an offset spatula.
  5. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
  6. Remove the pan from the oven and immediately top with a layer of mini marshmallows. Turn on the oven’s broiler and return the pan to the oven for 1-2 minutes, watching closely to avoid burning.
  7. Let the bars cool completely before lifting them out of the pan using the parchment paper. Cut into squares and serve.

Notes

Keep an eye on the marshmallows while broiling to avoid burning. Use a sharp knife for clean slices and add a pinch of cinnamon to the graham cracker crust for extra flavor.

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar
  • Calories: 250
  • Sugar: 22
  • Sodium: 150
  • Fat: 12
  • Saturated Fat: 6
  • Carbohydrates: 32
  • Fiber: 1
  • Protein: 3

Keywords: S’mores, Brownie Bars, Easy Dessert, Gooey Treat, Campfire Dessert