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A homemade chocolate brownie, with a soft graham cracker cookie dough, marshmallow fluff, and melted chocolate. The perfect s’mores bar!

S'more Brownie Bars by Modern Honey l

S’mores Brownie Bars

Just because summer is coming to an end and school is back in session doesn’t mean you can’t eat s’mores on the daily. Let me introduce you to a dessert bar that will rock your world. Homemade S’mores Brownie Bars are so rich and decadent that you won’t even miss s’mores by the campfire. I have to admit….these are even better.

Last weekend we embarked on a camping trip that will go down in the books as our biggest family adventure. Let me just sum it up in a few words. Basically, we got caught in a torrential rainstorm that began to fill our tent with water and wind that threatened to blow it to smithereens. We had a choice to make….stay in the tent and swim or pack it all up in a downpour of large hail.

Obviously, we chose the latter and the chaos that unfolded as we attempted to load wet, muddy camping equipment into our Yukon while being simultaneously drenched with water was an adventure I don’t want to repeat! The wind had completely mangled our windshield wipers which certainly didn’t help…..but after backing into a large pine tree, we made it out of the mountains and finally home.

We laughed so hard looking at ourselves. We were wet and dirty and completely caked in mud….but it was more than worth the opportunity I had to spend quiet, uninterrupted time with my family.

Since we were sitting around a campfire, we had to make a ridiculous amount of s’more until our tummies hurt. There is just something about camping and s’mores and I couldn’t get enough of the roasted marshmallow, chocolate, graham cracker goodness.

S'mores Brownie Bars

It’s National S’mores Day so we obviously need to celebrate such a holiday. It only comes around once a year so we better partake on this momentous day, right?

What is a S’mores brownie?

You start with a homemade chocolate brownie, top it with marshmallow cream, milk chocolate chunks, and graham cracker cookie dough. I kid you not.

The brownie batter is whipped up in one bowl, spread in a pan and baked for 15 minutes. Then you spread marshmallow fluff all over the hot brownies. Top it with quality milk chocolate and then homemade graham cracker cookie dough. It is baked all together until completely cooked through and then chilled.

Click HERE for my favorite 9 x 9 pan. You will literally not be able to wait for these S’mores Brownie Bars to chill before wanting to dive in.

S'more Brownie Bars by Modern Honey l

I saw this recipe on a fellow blogger’s site – “My Treadmill Is Broken”, where she specializes in decadent treats. I was smitten and knew that I NEEDED to make these S’more Brownie Bars stat. I played around with the recipe and this is the result –  homemade S’mores Brownie Bars.

It’s camping food without actually having to go camping. You are welcome. 

If you love all things S’MORES, check out these other recipes:

S'more Brownie Bars by Modern Honey l

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5 from 10 votes

S'mores Brownie Bars

By: Melissa Stadler, Modern Honey
Rich chocolate brownie, marshmallow cream, graham cracker cookie dough, and chocolate make this the ultimate s'mores dessert bar.
Prep Time: 20 minutes
Cook Time: 40 minutes
Total Time: 1 hour
Servings: 16



  • 1/2 cup Butter melted
  • 2/3 cup Sugar
  • 1/3 cup Brown Sugar
  • 2 Eggs
  • 1 teaspoon Vanilla
  • 1/2 cup Cocoa
  • 3/4 cup Flour
  • 1/4 teaspoon Salt
  • 1 - 7.5- ounce jar Marshmallow Fluff or Cream
  • Milk Chocolate Bars Hershey Bars, Trader Joe's Pound Plus Bar, or Milk Chocolate Bar

Graham Cracker Cookie Dough:

  • 1/2 cup Butter softened
  • 1/3 cup Brown Sugar
  • 1/2 cup Sugar
  • 1 Egg
  • 1 teaspoon Vanilla
  • 1 cup Graham Cracker Crumbs
  • 1 cup Flour
  • 1/2 teaspoon Baking Soda
  • 1/2 teaspoon Salt


  • Preheat oven to 325 degrees.
  • In a medium bowl, melt butter. Stir in sugars and stir until creamy. Add eggs and vanilla and stir well until combined. Stir in cocoa, flour, and salt.
  • Pour into 9 x 9 pan. Bake for 15-17 minutes.
  • Carefully spread marshmallow fluff or cream over hot brownie. Cover marshmallows with milk chocolate bars.
  • In a medium bowl, cream together butter and sugars until creamy. Add egg and vanilla until well combined. Stir in graham cracker crumbs, flour, baking soda, and salt.
  • Drop on top of chocolate and carefully press down to spread evenly. Bake for 20-24 minutes or until set.
  • Let chill for at least 1 hour before cutting. Place in refrigerator or freezer to give it time to set up before slicing.

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Dessert
Cuisine: American
Servings: 16
Keyword: s'mores bars, smores bars
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S'more Brownie Bars by Modern Honey |

Share the LOVE on Pinterest, Facebook, and Instagram with your fellow s’more lovers. They will love you for it! xo

Happy Baking!

Hi, I'm Melissa Stadler!

I am an Award-Winning Recipe Creator. Cover of Food Network Magazine. Two-Time Pillsbury Bake-Off Finalist. I am passionate about sharing the best recipes so you have success in the kitchen!

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Recipe Rating


  1. These bars were absolutely delicious! I used Biscoff cookies instead of graham crackers. And chocolate chips in place of a chocolate bar. Sooo good!

  2. These are so delish. I’ve got a soft spot for s`mores and totally enjoy brownies. So the two together wow!!
    Only there has to be another way to put them together. It took me more then an hour and you didn’t say to oil the pan. Plus if I wasn’t paying attention. I could see someone putting the marshmellow and chocolate into the mix, after its to late. I found it better to flatten the cookie dough and put it on alot easier. I’m waiting right now for them to come out of the oven. Each time I make them, I try something different. 2 mins left. Thank you

  3. I just wanted to say this looks AMAZING. I have a question though, do you think this would work with miniature marshmallows instead of marshmallow fluff? Would it affect baking time? Thanks!

  4. 5 stars
    Hi Jennifer! Thank you so much for such a kind comment. I am such a sucker for desserts! I always found that is the surefire way to win over teenagers by bringing treats. Great idea! 🙂 Thanks for taking the time to comment. I appreciate it! -Melissa

  5. 5 stars
    Just found your blog. I’m in love with the wonderful dessert ideas! My granddaughter is traveling with her volleyball team and we are always looking for something new and delicious to take to the games to feed the girls. This one is a keeper! Can’t wait to try some of your other recipes. Thanks for sharing.

  6. 5 stars
    Just made these and they are out of the world!!So decadent that they melted in my mouth.Its a dream come true.Your recipe is the best!Its a perfect day for it as its cold and damp in Mass.Thanks for all you do!

    1. 5 stars
      Good morning, Eileen! I am so happy to hear that you loved them! They are so decadent, right? I am craving one right now for breakfast. Haha! I can’t believe that you are cold and damp already in Mass. It is still so hot here in AZ and we can’t even think about wearing anything long sleeves until at least November! I am not sure what part you live in but we visited Boston this summer for the first time and just fell in love with the city. So much history and culture. Enjoy that cozy fall weather! 🙂 Have a great day! -Melissa

  7. I am so happy that I found your blog!!! I am dying to make these. One question: should the graham cracker cookie dough completely cover the chocolate?

    1. 5 stars
      Hi Megan! Thank you so much! That is a perfect question. The dough is quite thick so I usually use my fingers to press down all over the chocolate. There are some gaps where you can still see the chocolate but it will mostly cover it. I would love to hear how they turn out! 🙂

  8. 5 stars
    I made these bars yesterday and they were delicious! They combine three of my favorite treats into one bar, so it can’t get much better. I’ll be making these again soon for my grandkids.

    1. 5 stars
      Hi Kerry (aka Mom)! Thanks for trying my recipes and for being my awesome cheerleader. Love you Mom! xo