These EASY S’more Cookie Bars have a simple graham cracker crust, gooey chocolate chip cookie dough layer, with marshmallows and chocolate chips folded into the dough. They’re gooey, chewy, and baked in a 9x13 pan, making them the perfect dessert for a crowd!
These bars went Tiktok viral with over 4 million views - watch the video here!

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Whether you’re looking for a summer treat or just an easy dessert to bring to a party, this s’more cookie bar recipe is a crowd favorite!
Why I Love These S'more Bars
- No fancy layers: While some s’more bar recipes require you to make separate time-consuming layers, these gooey cookie bars can be made in 1 bowl in under 10 minutes! You don’t even have to chill the dough!
- One bowl & no mixer needed: Yes, that’s right. You can whip up these chewy chocolate chip s’more bars in one bowl without a mixer!
- Gooey texture with a firm crust: Because we’re layering chocolate chip cookie dough on top of a layer of graham crackers, these s’more bars are basically like gooey, marshmallow chocolate chip cookies...but in bar form.
- Kid Favorite: Whether you make these for after school snacks, potluck desserts, or just as summer treats for kids, these are sure to be a crowd favorite! It’s like a giant s’more cookie cake but in a 9x13 pan.
Are you a chocoholic? I have a new chocolate version of these using my cosmic brownie cookie dough base...Chocolate S’more Cookie Bars!
Ingredients for S’more Bars
- Cookie Dough: Unsalted butter, brown sugar, granulated sugar, egg, vanilla extract, baking powder, all-purpose flour, salt.
- Graham Crackers
- Mini Marshmallows
- Semi-Sweet Chocolate Chips (milk chocolate work too)
Tip: you could also make these s’more bars with premade dough from Pillsbury or Betty Crocker mix but you will need to adjust the pan size and baking time.
Step 1: Prepare Graham Cracker Crust
Preheat oven to 350 degrees. Spray a 9x13 pan with nonstick cooking spray.
Place 17 graham cracker squares in the pan so they cover the bottom. Set aside.
Step 2: Crush Graham Crackers
Add 8 graham cracker squares (i.e. 4 double rectangle) to a large ziploc bag. Use a rolling pin or metal pan to crush the crackers until you get graham cracker crumbs. This will equal ½ cup. Set aside.
Step 3: Make Cookie Dough Layer
In a small microwave-safe bowl, melt the butter for 20-30 seconds until JUST melted (you don’t want it piping hot).
Transfer butter to a large bowl and add in white sugar and brown sugar. Use a spatula (don’t use a mixer!) to stir by hand until combined. Mix in egg. Next, mix in baking soda, baking powder, and salt.
Add flour and graham cracker crumbs, then mix until all the flour disappears into the dough. Lastly, mix in mini marshmallows and ½ cup chocolate chips.
Step 4: Drop Dough Into Pan
Using a spoon or your clean hands, drop the dough into small chunks in the pan. This will help disperse everything so that you can easily smooth it out. (I highly recommend this method rather than trying to spread out a large chunk.)
Step 5: Press & Smooth Dough
Once all dough as been added, use a spatula or your hands to press down the dough into a smooth layer (being sure to get all the corners). Be careful not to shift around the graham crackers too much.
Once spread evenly, sprinkle ½ cup of chocolate chips on top of the dough and lightly press into dough.
Step 6: Bake, Cool, Cut
Bake at 350 degrees for 12-14 minutes or until top is a light golden brown and marshmallows are lightly toasted. Do not overbake or your bars will not be soft and chewy.
If desired, press on Hershey bar rectangles for added aesthetic.
Allow to cool before cutting into 24 pieces.
Frequently Asked Questions
9x9” square pan: For thicker bars, bake in a 9x9 pan and increase the baking time until top is lightly brown and center no longer looks wet.
Jellyroll pan: For a larger 11x17” pan, double the recipe and bake for 18-20 minutes or until top is lightly brown and center no longer looks wet.
Store in an airtight container for 2-3 days (they’ll last longer but will start to dry out after a few days).
You can also freeze these in an airtight container up to 1 month; allow to thaw to room temperature before serving
Ideas for Serving S’more Bars
- Potlucks: cut these in smaller squares (you could get up to 36 bites) for easy potluck dessert!
- Birthdays: add rainbow sprinkles into the cookie dough for a festive touch.
- Unique Christmas Cookies: add red and green jimmy sprinkles into the dough for an easy cookie tray idea! You could even cut these into triangles for a fun s’more Christmas tree.
- Camping Party Favor Idea: cut these bars in smaller squares and stack a few in my Free Printable S’more Boxes!
More Easy Cookie Recipes:
S’more Cookie Bars
Ingredients
- 25 graham cracker squares, divided (17 for lining bottom of pan, 8 for crushing into crumbs)
- ½ cup unsalted butter (you will be melting this)
- ½ cup brown sugar
- ¼ cup granulated sugar
- 1 large egg
- 1 ½ teaspoon vanilla extract
- ½ teaspoon baking soda
- ¼ teaspoon baking powder
- ¼ teaspoon salt
- 1 ¼ cups all-purpose flour
- 1 cup semi-sweet chocolate chips, divided (½ cup inside dough and ½ cup on top of dough)
- 1 cup mini marshmallows
- Hershey bar optional, to add after baking
Before you begin! If you make this, will you do me a huge favor and leave a review and rating letting me know how you liked this recipe? This helps my small business thrive so I can continue providing free recipes and high-quality content for you.
Instructions
- Preheat oven to 350℉. Spray a 9×13 pan with nonstick cooking spray.
- Place 17 graham cracker squares in the pan so they cover the bottom. Set aside.
- Add remaining 8 graham cracker squares to a large ziploc bag. Use a rolling pin or metal pan to crush the crackers until you get graham cracker crumbs. This should equal ½ cup. Set aside.
- In a small microwave-safe bowl, melt the unsalted butter (½ cup, i.e. 1 stick) for 20-30 seconds until JUST melted.
- Add in granulated sugar (¼ cup) and brown sugar (½ cup) and use a spatula to stir until combined (*do not use a mixer!). Add in egg (1 large) and vanilla extract (1 ½ teaspoons), then mix. Next, add in baking soda (½ teaspoon), baking powder (¼ teaspoon), and salt (¼ teaspoon) and mix again. Add all-purpose flour (1 ¼ cups) and graham cracker crumbs (½ cup), then mix until all the flour disappears into the dough. Lastly, mix in mini marshmallows (1 cup) and ½ cup of the semi-sweet chocolate chips.
- Using a spoon or your clean hands, drop the dough into small chunks in the pan. This will help disperse everything so that you can easily smooth it out. (I highly recommend this method rather than trying to spread out a large chunk.) Once all dough as been added, use a spatula or your hands to press down the dough into a smooth layer (being sure to get all the corners). Be careful not to shift around the graham crackers too much.
- Once spread evenly, sprinkle the remaining ½ cup semi-sweet chocolate chips on top of the dough and lightly press into dough.
- Bake at 350℉ for 12-14 minutes or until top is a light golden brown and marshmallows are lightly toasted. Do not overbake or your bars will not be soft and chewy.If desired, press on Hershey bar rectangles immediately after baking.Allow to cool before cutting into 24 pieces. Enjoy!
Last Step! Please leave a review and rating letting me know how you liked this recipe! This helps my small business thrive so I can continue providing free recipes and high-quality content for you.
Notes
Can I bake these in a different sized pan?
- 9×9” square pan: For thicker bars, bake in a 9×9 pan and increase the baking time until top is lightly brown and center no longer looks wet.
- Jellyroll pan: For a larger 11×17” pan, double the recipe and bake for 18-20 minutes or until top is lightly brown and center no longer looks wet.
How to Store S’more Bars
- Store in an airtight container for 2-3 days (they’ll last longer but will start to dry out after a few days).
- You can also freeze these in an airtight container up to 1 month; allow to thaw to room temperature before serving
Sharquita Pinkton says
Okay so I haven’t made the recipe yet, but I’ll definitely be making these tomorrow and will come back with a different review and possibly pictures. I had to leave a review before the recipe because it’s just amazing how simple it is to find these recipes without having to scavenge them.
Melissa says
Aww I'm so glad to hear that, Sharquita! Thanks so much for dropping me this note, I can't wait for you to try them!
Angela Twogood says
My daughter made these! The directions were simple & the bars so so very yummy! Thanks for the recipe & ideas!
Melissa says
Happy to hear you guys loved the recipe! Thank you so much for taking the time to leave a review, Angela! :)
Justine says
AWESOME!!
I only had a glass pan so took a little longer to bake, and then broiled to get the golden brown color but this is DELIOUS and SUPER easy to make. Adding to my Christmas cookie box :).
Melissa says
Thank you so much for taking the time to leave a review, Justine!
Shelby says
Wow! Such an easy recipe to follow and they turned out perfect! Will be adding this recipe to my summer dessert list. Thank you!
Melissa says
So glad to hear you loved this recipe, Shelby! Thank you so much for leaving a review!
Emily says
Can the filling be doubled for a 9 x 13 pan?
Melissa says
I probably wouldn’t double it, I think the thickness wouldn’t bake up the center enough before the top gets too brown!
Ky says
I made this as soon as I saw her video and omg best recipe ever!! It’s so good I been making it like once every month now!! Thank you Melissa!!!
Melissa says
Yay, so glad you loved this recipe so much! Thank you so much for taking the time to leave a review, I really appreciate it!
Saige says
So I LOVE all things s’mores & these bars did not disappoint! They’re actually even better the next day! They’re so rich, so decadent, & are best enjoyed while watching the hot Texas sunsets.
I followed the scratch recipe to T. I can’t wait to make these again for our summer parties! Thanks for the recipe for this awesome treat!
Melissa says
So glad to hear you enjoyed the recipe, Saige! Thank you so much for leaving a review!
Evie Grote says
I went to the store and was thinking of just making regular cookies but then I remembered watching your video and now they’re in the oven And they smell amazing 🤩
Elizabeth Danielson says
I made these bars for a funeral and dang are they delicious! So quick to make and something a little different than what other folks brought. I will definitely make again.
Melissa says
Thank you so much for leaving a review, Elizabeth! :)
Jade says
I have made these so many times now! The recipe is quick, easy, and results in the same beautiful treats every time! Have added sprinkles for 4th of July, Christmas, etc… I will be trying all of these recipes now!
Melissa says
I'm so glad you enjoyed this recipe, Jade! Thank you so much for leaving a review!
Vera says
Hi! I made these and baked them for 14 min 350 and they were still almost raw. Put them back in for a few mins. Not sure if I did something wrong???? Followed the recipe.
Melissa says
Hey Vera! What type of pan did you use; light metal, glass, disposable? Also, do you have an internal oven thermometer? They are around $5 on amazon and all my ovens over the years have been 15-20 degrees off and are 100 degrees off when they *say* they're preheated, so they take longer to preheat to the correct temperature. It sounds like your oven might run cold.
Andrea Pascual says
DELICIOUS! I have been craving s’mores for the past week, and I wanted an elevated version of them. I searched on TikTok, and this was the only recipe that really stood out to me. This is the perfect recipe and is super easy to make. The s’mores cookie bars are not overly sweet, but still have that nostalgic warm feeling when you take a bite. Thank you so so much for this recipe, and I will be making these for parties and the holidays!
Melissa says
So glad that you were able to find the recipe and that you enjoyed it!
Thank you for taking the time to leave this thoughtful review, I so appreciate it!
Ashley says
These bars are phenomenal! Yesterday I made them for the second time in 8 days. There are only 2 bars left today. Make them. You will not regret it.
Melissa says
Yay! So glad you love them!! Thanks for always leaving reviews, friend!
Emily says
I love this recipe so much. My family now always asks for me to make these.
Melissa says
So glad that you and your family have loved these S'mores bars!
Shane Douglas says
Melissa - look forward to trying this recipe!
Do you think the dough could be made the night before and stored in the refrigerator? If so, do you have any recommendation as to how exactly to store it - bowl with a lid or plastic wrap?
Thanks for your assistance!
Melissa says
Hi Shane! I haven't made this dough ahead but I think it would be fine to store in the fridge in a bowl tightly covered with plastic wrap. I will say that since this dough uses melted butter, it does have the tendency to dry out the longer it sits or chills so you will need to let it sit at room temperature before pressing it into the pan and you might even need to pop it in the microwave for like 10 seconds to help you warm it back up (it will be "hard" when chilled which may also make it tricker to not crack the graham crackers below).
Overall, I'd definitely say it's worth a shot! Report back how it works for you.
marissa says
this has become my family’s favorite summer dessert recipe! can’t thank you enough for it!
Melissa says
Aww I’m so happy to hear that! So glad y’all love them as much as we do! Thanks so much for taking the time to leave a review, Marissa!