S’more Cookie Bars

Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls.

Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls! Easy recipe on sallysbakingaddiction.com

If I could live off of one food for the rest of my life, it would be a s’more. The gooey marshmallow, the melty chocolate, the grahams. Technically that’s three foods, but stick with me here.

I’d also live off of peanut butter, mangoes, and this carrot cake.

But seriously… s’mores.

I don’t know anyone who can resist a s’more.

And if they can, their tastebuds must not be working properly.

Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls! Easy recipe on sallysbakingaddiction.com

My infatuation with s’mores expands to brownie pie, chocolate chip cookies, puppy chow, PEEPS, peanut butter cookies, rice krispie treats, and 7 layer bars. Pick your poison.

And yesterday, I wanted some more… s’more.

I made a basic cookie dough, swapping some of the flour with graham cracker crumbs. The cookie part tastes like thick & soft graham crackers. Almost like a graham cracker blondie – buttery, brown sugary, chewy, grahamy, and sweet. To make these, you’ll simply layer 2/3 of the graham cracker cookie dough into the bottom of a pan. Top with chocolate chips, marshmallow creme (Fluff), and then the rest of the graham cracker cookie dough.

It’s a variation of your classic campfire treat. Simply bake everything together into a bar and you have a travel friendly, unique way to get your s’more fix.

Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls! Easy recipe on sallysbakingaddiction.com

An important thing to note: do not use marshmallows in lieu of the marshmallow creme. The marshmallows will disintegrate into the dough, creating unpleasant looking craters, and become virtually invisible. You won’t really even taste them. I’ve tried that with cookies before. An ugly fail! Use marshmallow creme, which stands up to the heat of the oven.

I love marshmallow creme and don’t bake with it nearly enough! Fluff reminds me of my sister, Sarah. Growing up, Sarah always asked for fluffernutter sandwiches and I stuck to PB&Js.

Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls! Easy recipe on sallysbakingaddiction.com

These cookie bars are SO soft. Kevin asked me how I got them to be so soft. “Did you underbake them like you do with your cookies?” No – I didn’t. The graham cookie layer just stays soft when baked for 25 minutes. The tops of my cookie bars got a little brown, so they aren’t underbaked. Just magically soft. They will melt in your mouth.

I can’t decide which part I like the most. The melty chocolate? The gooey marshmallow? Or the soft & chewy graham cookie. I’m not really sure – it just tastes incredible when sandwiched all together. My tip to you: eat these warm! You’ll really feel like you’re next to the campfire on a hot summer night.

Kevin’s coworkers are getting the leftover bars today. Guys, if you’re reading this… you’re welcome. And I’m sorry there aren’t that many leftover. I cannot resist s’mores!!

Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls! Easy recipe on sallysbakingaddiction.com

Follow me on Instagram and tag #sallysbakingaddiction so I can see all the SBA recipes you make. 

Oh hi! Welcome to S’mores Mania.

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S’mores Cookie Bars

  • Author: Sally
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Total Time: 3 hours
  • Yield: 16 bars
  • Category: Bars
  • Method: Baking
  • Cuisine: American


Soft & chewy graham cracker cookie bars with chocolate and marshmallow swirls.


  • 1/2 cup (115g) salted butter, softened to room temperature*
  • 3/4 cup (150g) packed light brown sugar
  • 1 teaspoon pure vanilla extract
  • 1 large egg, at room temperature
  • 1 cup (125g) all-purpose flour (spoon & leveled)
  • 1 cup (100g) graham cracker crumbs (9 graham crackers)
  • 1/2 teaspoon baking powder
  • 1 and 1/4 cup (225g) semi-sweet chocolate chips
  • 1 heaping cup marshmallow creme


  1. Preheat oven to 350°F (177°C). Line an 8×8 or 9×9 square baking pan with aluminum foil, leaving enough overhang on the sides to easily remove the bars when they have cooled. Set aside.
  2. In a large bowl using handheld or stand mixer fitted with a paddle attachment, cream the butter and brown sugar together on medium-high speed. Beat for about 2 minutes until smooth and combined, then add the vanilla extract and egg, beating until combined. Scrape the sides of the bowl down as needed. Set aside.
  3. Toss the flour, graham cracker crumbs, and baking powder together until combined. With the mixer running on low, slowly add the dry ingredients into the wet ingredients. Mix until combined.
  4. Press 2/3 of the graham cookie dough into prepared pan. Spread the marshmallow creme on top. This will be tricky since the marshmallow creme is so sticky, but do the best you can to get an even layer. (Sometimes I spray the bottom of a spatula with nonstick spray to spread it around.) Sprinkle the marshmallow creme with chocolate chips. Mold the remaining cookie dough into flat pieces and layer on top of the chocolate chips. You won’t have enough dough to make one single layer, so some chocolate chips will be exposed. That’s ok.
  5. Bake the bars for 25 minutes, or until the top is lightly golden brown. Allow to cool completely with the pan set on a wire rack before cutting into squares.
  6. Bars stay fresh covered tightly at room temperature for up to 1 week, if they last that long! I enjoy the cookie bars warmed up in the microwave for 20 seconds.


  1. Freezing Instructions: Bars can be frozen for up to 3 months. Simply thaw overnight in the refrigerator, then bring to room temperature before serving.
  2. Butter: If using unsalted butter, add in 1/4 teaspoon of salt with the flour.

Keywords: smore cookie bars

Soft, chewy, and completely addicting S'mores Cookie Bars. Easy to make, too! Recipe on sallysbakingaddiction.com


  1. You are speaking my language girl. These bars. Oh my gosh I need them!

  2. Jess @ On Sugar Mountain says:

    I am so happy that you love s’mores like I do! Then I get to come and drool over these wonderful bars. These look fantastic, Sally. Perfect for summer bbq’s for sure. 😀

  3. Trish - Mom On Timeout says:

    Oh yeah! We love to take these camping so we can enjoy s’mores all day long 🙂 These look incredible Sally! Pinned!

    1. Hey Trish! Thanks for pinning – and yes, portable s’mores. So convenient!

  4. Maggie @ Sunnyside Up Smile says:

    S’mores are the best! These bars look so dense and chewy- the perfect combo! 😉

  5. I love that you can still think of campfires on the first day of summer–LOVE! I’ve got my half jar of marshmallow creme that I need to finish before I move this weekend, can’t wait to make these 😉

  6. Love these Sally! Love the grahams in the Dough!!!

  7. I’m watching Shark Tank right now and there was someone on there trying to sell a s’muffin. She actually trademarked it. Have you heard of it? I think her company was called Gimme S’More.

    1. s’muffin? I haven’t heard of it – but I’m intrigued 🙂

  8. Ari @ Ari's Menu says:

    Ohhhh girl, these look to die for! I love the graham cracker crumbs inside!

  9. How did you know I’ve been on a s’more kick? Currently I have s’more ice cream and s’more Toaster Strudels in my freezer. And now I have your s’more bars cut into squares and I’m enjoying one right now as I type this review.
    Your s’more bars came out wonderful! They are soft and flavorful. My whole house smelled like I was baking graham crackers. I microwaved the marshmallow creme for 15 seconds to make spreading it on the base easier, microwaving it really did help. The best part of this recipe is that I had everything on hand to make it and didn’t need to run to the store to get anything needed for this recipe.
    Thanks for your awesome recipes. I’m so glad I found your website 🙂

    1. S’more toaster strudels!?? I didn’t even know those existed. So glad you made these, Barbara! I love them and your tip for heating up the marshmallow creme – perfect! That always helps me too.

  10. Often I find myself at your website, marveling at all of your lovely pictures and great recipes. I’m certain I have even made several that have come out great. I saw this recipe for S’mores Bars and thought… my oh my a MUST make recipe!! As a side comment, I saw the Fluff jar. I will admit, I am biased, as I grew up on the east coast where Fluff is a staple. Many peoples tastes are based on what they grew up with and for me, its Fluff. Theres a distinct differene between marshmallow cream and fluff in texture and Fluff actually behaves better than marshmallow cream in recipes for some reason ??magic ingredient?? I feel like a Fluff connoisseur as I have gone so far as to purchase directly from the company when I was unable to acquire it following a re-locating to the midwest. Sad but true. I’m crazy about my Fluff, its more than a name brand of marshmallow cream. LOL! and it will only be Fluff in this recipe of yours for me 🙂

    1. Sounds like you love fluff as much as my sister does (or did!)! We’re on the East coast as well. Fluff is a magical little spread and perfect in this recipe!

  11. Thank you so much for the recipe! I’m making them now and cannot wait to try the final product. I don’t know if someone else already said this, but to spread out the marshmallow fluff and the cookie dough (mine was sort of like a very thick batter) I used an offset spatula. For the fluff, I sprayed the offset spatula with Pam, and then just spread it out. So much easier than with a plastic spatula! Thanks, and I can’t wait for the bars to finish!

    1. How helpful, Gabby! Thanks. So glad you made them. Enjoy!

  12. Hey Sally! These s’mores bars look divine! I could also live off s’mores. This post was a pleasant surprise for me; I just got home from a week-long summer camp out in the middle of nowhere and was disappointed because we didn’t make s’mores :(. But these look so good! I can’t wait to try them! Also, I made your cinnamon swirl banana bread last week and it was fantastic! thanks so much! 😀

    1. Hey Teresa! A camping trip without s’mores? So awful! You’ll have to make these then. And that banana bread is the best! Thanks Teresa!

  13. angela @ another bite please says:

    yes I can not turn down a s’more!

  14. Sally! Remember the new roommate I mentioned I’d have to make some of your stuff for? Well I showed her your blog last night (as she was looking for some recipes) and she told me she spent like an hour on it… looks like I might be the one receiving goodies from it! 😉

    1. How perfect Erin!!! I love it 🙂

  15. Hi Sally,
    I love your blog and read it all the way from Melbourne, Australia.
    I have also got my friends into checking out SBA too!

    I made these last night after noticing Fluff in my local grocery store for the first time and wondering what to do with it. These were delicious! Thanks for sharing this one on your blog. Marshmallow creme is not something we’re familiar with here, so looking forward to some other recipes using it!!

    1. SO glad you tried Fluff – it’s a wonderful ingredient in dessert recipes when you need some marshmallow flavor and texture. Thanks Michela! So glad you follow my website.

  16. Stephanie @ Eat. Drink. Love. says:

    Sally, these are just amazing!

  17. Chung-Ah | Damn Delicious says:

    I definitely can’t resist a s’more. And I can’t resist them even more when it’s in bar form. The portability of it makes it TOO easy to gobble up!

  18. Found your website through instagram. My 13 yr old daughter made the S’more bars today and they are amazing! She used Hershey Mini Kisses instead of the semi-sweet morsels and they are delicious. I’ll be walking extra miles tomorrow so I can have more S’mores!

    1. How perfect! So glad you found my website, Mary. Love these bars!

      1. Thank you for taking the time to respond. We are hooked on your website and instagram (found you through King Arthur Flours’s “like” of the S’more bars. We love to bake and can’t wait to try many more of your recipes. Also, we look forward to purchasing your cookbook one day soon!

      2. Thanks Mary! The book will be out in about 10 months 🙂

  19. These look awesome! I have a cheat day every Saturday and usually pick something out from your website to bake, and I think this will be the recipe this Saturday.

    1. Saturdays sound like a fun day. 🙂 Let me know how you like these, Emma! Thanks!

  20. I don’t think I have ever actually eaten a s’more – but I love marshmallow fluff so I would love to try this. I only have chocolate grahams in the house – do you think they would work instead of regular graham crackers?

    1. Yep! That would work very well. I love chocolate grahams!

  21. Okay, I am totally making these tomorrow. I have a friend who just had a baby and I was thinking and thinking of what to make for her. These s’more bars just knocked everything off the list.

    1. Congrats to your friend! This would be a wonderful treat. Thanks Shannon!

  22. Sally,
    I live in Australia and can’t get Graham Crackers or Flour. (It’s so tough being an American in Australia!) Do you have any suggestions on possible spice additions I can make to the cookie dough to compensate for the lack of Graham but still provide the taste?
    Thanks for your amazing recipes!!!

    1. Hi Cynthia – no, I don’t. Do you have biscoff spread? You could try it using this biscoff blondie batter instead. But I have never tried that before so I am unsure if the results will be the same. https://sallysbakingaddiction.com/2013/05/22/biscoff-white-chocolate-blondies/

  23. If I were to make these with unsalted butter, how much salt should I add?

    1. 1/4 – 1/2 teaspoon

  24. Laura Dembowski says:

    I could probably live on marshmallows forever. These bars look awesome! I am imagining how good they must be warm.

  25. Elisa @ I Must-ache you, Mama says:

    omg. these look delicious .. i came across your blog from .. i think it was little miss momma.. and im in love with all the recipes that look so yummy.

    but these wont sit well with my new diet plan lol.

  26. for the s’more cookie bars does the butter need to be melted or at room temperature?
    LOOVEE you recipes by the way. AMAZZINNGGG

    1. room temperature. Glad you love my website and recipes!

  27. Nutmeg Nanny says:

    I’ve been on a s’mores kick lately, they are so delicious 🙂 these cookie bars look fantastic!

  28. Sally – I HAD to stop by and tell you think I think this may be your best recipe yet. I made them on Wednesday, took them out of the oven, and my boyfriend said, “what is THAT and when do I get to eat it?” I actually put them under my broiler in my oven for 40 seconds, then turned them and another 40, and they got the most gorgeous golden color on top. Brought them to my 4th of July party and they were DEMOLISHED. People told me they were breaking their diets for them! I need more summer parties to have excuses to make this!!!

    1. I can only imagine they disappeared, Dana! I made these yesterday again and they were gone at the 4th of July party before I even got one! I am so glad you love them and want to make them again often. 🙂

      1. Yep, preparing to make these for a third time this weekend.

      2. yesterday we got the brilliant idea to put the whole pan on the barbecue grill. i might have been the hero of the day : ) and i promise to stop commenting now!

      3. I don’t mind your comments, Dana! And I love that idea, yum!

  29. These were amazing! I made two batches for an outing this weekend and they both were devoured! Thank you so much for such a perfect smores bar, the prep was simple and the bake time was spot on for me. I had several request for the recipe. I love your blog!

  30. Hi Sally! I had my eye on these bars for a few weeks but kept forgetting to grab marshmellow fluff at the store. Last week my memory did not fail me and I was able to make these bars. My boyfriend and I took our first bites and just looked at each other because they were SO good that even if our mouths were full words just wouldn’t explain how delicious they were! They are my new addictive cookie bar! Thank you Thank you!

    1. Hillary, that’s so great!! I’m sure these were worth the wait. Thanks for reporting back!

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