S'mores Bars are everybody's favorite campfire treat except in bar form and without the camping! Gooey marshmallows, buttery graham cracker crust, and melty chocolate, all in wonderful ooey, gooey cookie s'mores bars that you won't be able to stop eating!

The flavor of classic s'mores will always and forever be linked to my childhood and one of my obsessions. Some of our other favorite s'mores-inspired desserts are Chocolate Chip S’mores Cookies, S’mores Snack Mix, and this show-stopping 3-Layer S’mores Cake.

An image of s'mores bars topped with Hershey's chocolate squares and toasted marshmallows.

I originally posted this recipe on July 4, 2016! But the photos and the recipe needed a little update since I've tweaked it a little more since then to add even more marshmallows and chocolate on top (both for looks and because who doesn't want more marshmallows and chocolate on top?).

First off, Happy 4th of July! It's one of my very favorite holidays, right up there next to Halloween. I love everything about it - fireworks, bbq's, music by John Philips Sousa, and especially the food. You always here about the magical first snowfall of winter, right? Well I feel that way about the first s'mores of the summer.

I mean, who doesn't? And s'mores bars on the 4th of July?! I mean, apple pie is definitely all-american but so are s'mores.

When I can't have good old campfire s'mores because we aren't out in the woods somewhere or we are celebrating the 4th at home, I've gotta say, these s'mores bars have a magic all their own. They will magically make everyone love you. They will magically disappear. They will magically turn you into a baking genius!

An image of s'mores cookie bars in a pan lined with parchment paper for easy removal.

And if you love brownies and bars like these, you might also want to check out my pecan pie cheesecake bars, strawberry rhubarb crumb bars, Mississippi mud nrownieseasy caramel pecan brownies, or peanut butter blondies.

I've seen s'mores bars made by replacing some flour with crushed graham crackers or using marshmallow fluff in place of marshmallows. But this version of s'mores bars starts out with a buttery graham cracker crust on the bottom, which is topped with a cookie dough-type batter that is loaded with chocolate and marshmallows.

After baking that for a bit in the oven, you pull out the bars and top them with more marshmallows and Hershey's squares (rectangles? but don't we call them squares?) before throwing them back in the oven to finish cooking.

Oh, and I sprinkled them with a handful of chocolate chips after taking them out of the oven just for the sake of prettier photographs, but I'm probably going to do it every time from now on.

An image of chocolate and marshmallow cookie bars cut into squares.
An image of s'mores bars cut into squares and stacked on top of each other.

Looking for a last minute treat for your 4th of July party? Look no further.

You probably already have everything you need for these in your pantry, even the Hershey bars. Like magic. C'mon - we all have a stash of chocolate somewhere around the house, right?

Paul has taken these to work multiple times and always comes home with requests for the recipe. One of the partners he worked for even told him that this was the best dessert he has ever eaten. 

I got the same comment recently from a bunch of teenagers when I took them to a church youth event. Which is quite a testament to the power of these addicting little bars.

An image of s'mores bars on a cutting board. An image of squares of homemade s'mores bars. You should know, if these s'mores bars are in the house, you will probably find yourself making up excuses to walk back through the kitchen to "put something away" only to slice off a sliver of s'mores bars and hope that nobody notices.

Then you will see you didn't slice perfectly straight and have to have another slice just to even things up. And so on. Consider yourself warned.

I originally got the recipe from The Hungry Runner Girl. She brought these s'mores bars to a party thrown by a mutual friend. That's the only time we ever met but obviously we bonded over our shared love of dessert and she pointed me to the recipe on her blog, which is awesome btw.

An image of an easy cookie dessert bars made with a graham cracker crust, marshmallows, and Hershey's chocolate.

How to Make S'mores Bars

1. Make the graham cracker crust.  Pulverize a bunch of graham crackers and mix with a little sugar and butter to make a crust. Press into the bottom of a 9x13-inch baking dish and bake for a few minutes until set.

An image of graham crackers in a food processor to be pulsed into fine crumbs.
An image off a graham cracker crust in a 9x13-inch glass baking dish.

2. Make chocolate chip cookie dough! With marshmallows!  Combine butter and sugars in a large mixing bowl and beat until light and fluffy. Add eggs and vanilla and beat again, then mix in flour, baking soda, and salt just until combined. Stir in chocolate chips and marshmallows.

An image of chocolate chip cookie dough with marshmallows in it.

3. Press cookie dough into pan on top of graham cracker crust.  Then bake for 18 minutes at 350 degrees F.

An image of chocolate chip cookie dough pressed into a 9x13-inch baking dish on a graham cracker crust.

4. Top the partially baked bars with more marshmallows and broken up Hershey's bars.  Finish baking for another 9-11 minutes.

An image of Hershey's bars both in and out of the wrappers.

5. Try to wait for the bars to cool enough to cut them into squares.  It's not easy. They will smell amazing.

An image of s'mores cookie bars topped with toasted marshmallows and melted Hershey's chocolate.

Love s'mores? Here are s'more recipes you'll love!

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S'mores Bars

4.77 from 80 votes
Amy Nash
Prep Time 15 mins
Cook Time 35 mins
Total Time 50 mins
Course Dessert
Cuisine American
Servings 18 squares
S'mores Bars are everybody's favorite campfire treat except in bar form and without the camping!  Gooey marshmallows, buttery graham cracker crust, and melty chocolate, all in wonderful ooey, gooey cookie s'mores bars that you won't be able to stop eating!

Ingredients
  

Graham cracker crust

  • 2 ¼ cups graham crackers (1 ½ sleeves, crushed)
  • cup salted butter, melted
  • cup granulated sugar

Cookie top

  • 1 cup salted butter, softened
  • ¾ cup granulated sugar (150g)
  • ¾ cup packed brown sugar (150g)
  • 2 large eggs
  • 1 teaspoon vanilla
  • 2 ¼ cups all-purpose flour, scooped and leveled (317g)
  • 1 teaspoon salt
  • 1 teaspoon baking soda
  • 3 cups miniature marshmallows divided
  • 1 cup semi-sweet chocolate chips
  • 3 Hershey bars broken up

Instructions
 

  • Preheat the oven to 350 degrees. In a medium bowl, mix together the graham cracker crumbs, melted butter, and sugar using a fork, then press the crumb mixture into the bottom of a 13×9-inch rectangular greased baking dish. Bake for 7 minutes, then remove from oven and allow to cool slightly.
  • Meanwhile, cream the butter and sugars together. Add in eggs and vanilla and beat well until light and creamy. Stir in flour, salt and baking soda just until combined. Then mix in the chocolate chips and 2 cups of the marshmallows by hand.
  • Carefully spread cookie mixture over the graham cracker crust by dropping spoonfuls of batter evenly around the dish and then gently pressing it together so you aren't disturbing the graham cracker crust beneath.
  • Bake for 18 minutes at 350 degrees, then quickly remove from the oven, top with broken pieces of Hershey Bars and sprinkle with remaining 1 cup marshmallows. Return to oven to finish baking. Bake 9-11 minutes more, until golden brown on top. The center should be mostly set but still just a little undercooked. Don't overcook - you want to eat these just a little on a the gooey side, trust me.
  • Remove and allow to cool completely before cutting and serving.

Video

Notes

I will sometimes sprinkle the bars with a handful of chocolate chips after removing them from the oven. The bars don't need that extra bit of chocolate, but I think it makes them look extra attractive. It's a total vanity move, but I recommend it!

Nutrition

Calories: 513kcal | Carbohydrates: 64g | Protein: 5g | Fat: 28g | Saturated Fat: 17g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 8g | Trans Fat: 1g | Cholesterol: 64mg | Sodium: 434mg | Potassium: 167mg | Fiber: 3g | Sugar: 41g | Vitamin A: 557IU | Calcium: 37mg | Iron: 2mg
Tried this recipe? Show me on Instagram!Mention @HouseOfNashEats or tag #houseofnasheats!

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About the author

Hi, I'm Amy

I enjoy exploring the world through food, culture, and travel and sharing the adventure with mostly from-scratch, family friendly recipes that I think of as modern comfort cooking.

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Reader questions and reviews

  1. 5 stars
    Dude, you are way more generous than I am - sending this for others to munch! I'd hide in my closet and not share with my kids!

  2. You got me at smores two of my favorites in one bite without the mess. I need one of this now =) with a scoop of ice cream Oh my goodness I am hungry

  3. 5 stars
    Oh these look so good!! My kids love smores so if I made this - it would be over in an instant. Yum.

  4. Ok, my mouth was watering as I read this recipe. With summer entertaining season here, I know these would be a welcome addition to the dessert rotation. I know it will be a crowd pleaser,..and I won't have leftovers!!

  5. 5 stars
    What a great idea for smores. Love that you made them into bars. I could see these as being devoured by so many members of my family!

  6. 5 stars
    Oh my goodness, I love this recipe so much! I'm not much into dessert bars, but this looks like such a great way to enjoy the flavors of s'mores without the mess. Yum!

  7. Looks like very good snacks for kids! I love that you made it in bars for small bites 🙂 My kids favorite snack that I making with vegan version.

  8. I like your idea of making it into smores bars.these are kids favorite. Now I know what to do when it comes to an easy dessert.

  9. 5 stars
    They look terrific! They wouldn't last too long around here. I'd have to double the chocolate, because I have a habit of eating it instead of putting it into the recipe.

  10. 5 stars
    OMG, look at those chunky marshmallows + chocolate bars peeking through the bars .... that absolutely gorgeous!!! I love smores but never tried making bars and this is a fantastic idea 🙂

  11. 5 stars
    This is so perfect! S'mores without the mess of the campfire and marshmallows burning to a crisp! This is like having my bars and eating them too!! Will have to make these for the grandsons.

  12. Would it be a sin to have them for breakfast? I am yet to have breakfast and I am craving for some. I would not be sharing this with anyone.

  13. 5 stars
    These are the most perfect looking bars I have seen! How fabulously made and certainly scrumptious what with all that chocolate!

  14. Everything about this recipe make is drool worthy,, but these bars are really making my stomach growl 😀

  15. This looks like perfect spring family treat. My kiddo would LOVE this. Love the addition of mini marshmallows. It's great for kids party too. I'm definitely saving this recipe. Looks delicious with that chocolate on top. YUM!

  16. 5 stars
    I literally love all things smores and can and will eat them at any time of year. These would be dangerous to make for me, but I'm so tempted!

  17. 5 stars
    Literally eating a S'more while reading this and it's so messy. Def could have done with one of these instead ?

  18. Shortening is added in the recipe but is not listed in the ingredients. How much and what kind?

    1. Whoops! Sorry! When I originally posted the recipe I used half shortening and half butter, but have since switched to using all butter. I updated that in the recipe ingredients list but must have missed it in the instructions! I fixed it now though! Thanks for asking!

  19. I made these and took them to a party and people raved (and raved)! They came out amazing. The only thing I did slightly different was use dark brown sugar and some milk chocolate chips bc I didn’t have enough bars.

  20. Most of the comments on this recipe are from people who didn’t actually make it and are just saying that it looks good. It does, but in practice it turned out only *okay*. Overall there’s way too much butter in the batter to the point where that’s all I could taste. It was hard to tell if they were actually cooked because of the amount of butter. Also, it was a lot of work for the end result. I’ll be giving these to my son in college rather than taking them to a potluck as planned. Good idea, but I won’t be making again. 

  21. I made these s’mores bars for a family gathering. They were the hit of the party. Everyone loved them! I took someone to my staff and they loved them too. Everyone wanted the recipe. Thanks for sharing 😁

  22. This did not turn out well for me. I’m wondering if it makes a difference if I use a metal pan vs. a glass pan? What did you use?

      1. I think it’s important to indicate that in the recipe because that can make a big difference :/. I just made them and am waiting for them to cool, but in my experience most recipes call for unsalted butter so that is what I used. Hopefully they came out ok. I think I left them in a minute too long because they’re a bit past ‘golden’ 🙁 so fingers crossed 

  23. These were super tasty and very gooey (as warned). I made them to take to a scout event, but could not serve them because they fell apart and were so messy.

  24. Delicious bars they’re so tasty and gooey. You could probably get away with putting half the butter. My bars were drenched in butter on the bottom. Also my bake time took over an hour! I followed the recipe exactly 

  25. Bummed. These looked so good, but mine did not turn out. They never fully cooked-just simmered in all the butter. This I may opt for less next try. 

  26. Sooo good! I’ve been baking a lot in quarantine and this is by far my favorite thing I’ve made! Thank you for the recipe!

      1. I don't bother to grease the pan if I'm using a piece of parchment paper, but otherwise just a baking spray with flour in it like Baker's Joy is my choice.

  27. I made these today and they were hands down one of my favorites! They were perfect and everyone loved them! Thank you for the tasty recipe! ❣️

  28. Made these s'mores bars for my coworkers and they loved them. I barely got a bite! I may have used more then a handful of morsels at the end so I am gonna go easy next time. They were excellent and easy to make. Everyone enjoyed and will definitely be making these again! 😋 

  29. 2nd time I've made these, love them and so did all my coworkers? 
    Question??? Can I make these the day before a party and reheat next day before heading to party? 

    1. Yes, you can make these ahead and warm them up, although the marshmallows might melt away with the reheating. I would recommend just serving them room temp. 🙂

  30. This is absolutely a wonderful recipe. However, the chocolate from the Hershey's candy bar plus the chocolate pieces need to be added AFTER everything has completely been cooked and AFTER it has been cooling for about 12 minutes to get the 'signature' HERSHEY stamp on bar to stay visible. Otherwise, it will all melt in if you do as recommended - which is to throw the chocolates on top and cook for an additional 9-11 minutes more. You don't get the signature look on the top unless you let everything cool down a while first. But hands down everyone's favorite as it truly carries the taste of a smore with the additional richness of butter. Soooo good.

  31. S'mores are one of my favorite treats. They take me back to being a kid sitting around a camp fire. You knocked it out of the park with this recipe.

  32. Made these for an outdoor (COVID) New Year’s Eve party, thought it would be a fitting outdoor dessert to bring....they were a HIT! My family microwaved a leftover piece for 20 seconds & said it was just like eating a roasted s’more.

  33. Absolutely obsessed with these! So quick and easy to mix up, and they were the HIT of our Super Bowl spread! Definitely adding this to our regular dessert rotation 😊

  34. Made these twice so far and I love them! One question - mine get quite golden brown by the end of the initial 18 minutes, and if I leave them in for 9 more minutes with the additional chocolate & marshmallows they start to burn. Would you recommend turning the temperature down throughout/for one period, or shortening the baking time? I have checked the temp of the oven with two different thermometers and it's right on 350, so unfortunately that's not the issue. Thank you!

    1. If your oven temp is right and it's getting pretty golden on top, I would recommend covering the bars with aluminum foil rather than decreasing the temperature. That should allow the bars to cook through without browning as much on top!

  35. I made this recipe today so I could use up smores ingredients in my pantry. THIS RECIPE ROCKS!! I love chewy and gooey cookies and this fits the bill. I didn't have mini marshmallows so I just cut regular marshmallows into quarters with kitchen scissors. Perfect substitute. Thanks for sharing this awesome recipe with all of us. This recipe is a keeper and I'll make it again and again.

  36. These are amazing, the milk chocolate Hershey bars are a bit too sweet for me next time I’d try with dark!! But really delicious I know they won’t last long 😆

  37. 5 stars
    This is such a yummy treat ,for me serving this with a scoop of vanilla ice cream topped it beautifully!

  38. 5 stars
    I made these yesterday and they are soooo yummy. I did use the jumbo marshmallows as it's all I had and they didn't turn out as pretty as these, so next time I will use the mini marshmallows. Thanks for the recipe!