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

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Oh hi! Welcome to S’mores Mania.


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. Hey Sally!

    Your a genius! You know, I thought of doing the exact same thing to make s’more bars one day when I had time?!? Especially swapping in some graham “flour” & using marshmallow cream. That’s neat ;-D

    These look SO good!

    On a totally different subject, I was wondering if I could make a suggestion ? I see you have many, many, many (wonderful) banana bread/muffin recipes, but I haven’t found a Chocolate Banana Bread recipe here yet. Perhaps you are working on it, but I thought I might just suggest this. Banana bread/muffins are awesome!

    1. Hey Mandie! What a great suggestion for chocolate banana bread. I do have chocolate banana muffins in case you missed those. It’s a healthier muffin recipe: https://sallysbakingaddiction.com/2012/11/11/skinny-chocolate-banana-fudge-muffins/

  2. Can you believe that I recently ate a real s’more for the first time? I’ve been deprived my whole life! These bars look like a great way to recreate the classic campfire treat.

  3. As I was scrolling through the pictures I was thinking to myself “man I find it so hard to bake with marshmallows and she does it so well!” Then I saw the marshmallow cream! This is like a new revelation to me!! THANKS!!

  4. Especially when they are this gooey looking! I have one way to encompass another thing to live off of though, mix in pb cups O:-)

  5. Thanks for the awesome tip on the marshmallow creme! I too love smores, like you said, who doesn’t?! I have a family reunion weekend coming up next month and these would be a perfect treat for then. Summertime +smores = good thing. 🙂

  6. I love marshmallow fluff. Since I haven’t had a real marshmallow in 13 years *cries* fluff has been my go to replacement and it’s just sooo good. These look amazing, Sally! Is it 7.5 oz marshmallow fluff? Looks like that part got cut off

  7. These looks AMAZING, Sally! Perfect to whip up as a treat for my big 3-0 birthday on Saturday! I’m all about some s’mores – *obsessed* with the s’more pop-tarts as a child. Silly question, but could I substitute unsalted butter for the salted (what I have on hand at the moment)?

    1. Happy early birthday Cory! How exciting. 🙂 I love those s’mores poptarts. They are such a treat. I love the way they smell as you toast them. You could use unsalted butter, yes. Add about 1/4 tsp of salt to the flour though.

  8. I can not wait to make these! Ever since I read this blog post on pinterest, I have had the BIGGEST s’mores craving!


  9. So I have a potluck BBQ to go to next weekend, and I am obviously bringing dessert…now I have another recipe to consider! (also looking at the 7 layer bars) Bah, decisions! 😉

    1. I don’t think I could choose, Sam! I love them both. And they are both easy to make and take the same amount of time. Make both 😉

  10. What a great summer treat! I never would have thought to use marshmallow creme instead of actuall marshmallows. I know there are a few brands of marshmallow creme without gelatin so that’s a total plus for me. Love these!

  11. Ooooooh s’more-sy goodnesssss. I would love the chewy soft graham cookie layer, AND the melty marshmallow fluff AND the gooey chocolate mmmmmm

  12. A smore and a cookie combined… oh my, I have to take a minute to relax before running out to buy all the ingredients! Great recipe, definitely going to make very soon.. maybe tonight!

  13. I’ve tried many smores desserts, but in the end, nothing beats the real deal. Maybe its the setting, or the people, but that melty chocolate and marshmallow smashed between two graham crackers and sticking to everyone and everything is the best. Smores, wow, they are one of my favorite desserts! I like the graham cracker “crumble” on top and you always capture the gooey wonder of marshmallows so well in your pictures!

  14. YUM! I’ve tried a few smores cookie bar recipes, but none yielded the soft & delicious result I’ve been looking for. I can’t wait to try yours Sally! Is there any reason why you chose salted butter? Is that what you had on hand or do you recommend using salted?

    1. Rachel – it’s just what I had on hand. Using salted butter is sometimes easier than adding in salt too. So if you use unsalted – add 1/4 tsp of salt with the flour.

  15. Sally these look so amazing!! Why did I open this post before lunch?? The soft graham cracker layer is a must try. I love baking with marshmallow fluff too and really should use the rest of a jar I have 🙂

  16. Oh they look so good and I have all the ingredients on hand! Wish I had seen this earlier – I just started a batch of cookies :/ I’ll just have to make them another time. The only reason for a campfire is for smores!

  17. These are like portable s’mores without a sticky mess! I’ll take the whole batch, please and thank you.

  18. Oh yum! I love me some s’mores! I was a fluffernutter fan as a kid like your sister. 🙂

  19. I need to make these! I need a s’more! I’m a s’mores child (born on national s’mores day). Arg, I’m three hundred miles away from my kitchen. I’ll have to wait until the end of the summer!

  20. I can never resist a gooey s’mores!!! These look like the perfect campfire bar! I love using fluff to bake with…I grew up eating fluffernutters too 🙂

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