Easy S’mores Bars Cookie recipe, one of the best potluck desserts full of chocolate, marshmallow fluff, and graham crackers. People go crazy for these easy dessert bars! These s’mores cookies are also great for National S’mores Day, August 10th.
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Easy S’mores Bars, the best summer potluck cookie recipe! Loads of graham crackers, chocolate, and marshmallow all in one cookie and no fire pit or campfire needed! Be sure to check out the video to see how quick these dessert bars come together.
Oh how I love s’mores don’t you? Like my Chunky Dipped S’mores Cupcakes!
I love s’mores, but not always convenient to have a fire when you’re in the mood for one. These Easy S’mores Bars will help with those s’mores cravings. I made them late at night so unfortunately I didn’t take any pictures while I was going along, but they’re easy to make I swear!
National S’mores Day is also coming up on August 10th, so be sure to hold on to this cookie recipe.
What’s a S’more?
I’m sure most of you are familiar with s’mores, but just in case you aren’t…
You typically roast a marshmallow on a long stick over a campfire, then put it in between two graham crackers and chocolate. A fun summer treat!
How to make S’mores Bars:
No fire needed for this cookie version!
First preheat your oven and lightly grease a 13×9-inch baking dish.
Then in a mixing bowl, mix together the flour, graham cracker crumbs, baking soda, and salt.
I like to put the graham crackers in a food processor and process for just a few seconds to get the crumbs. You could also put the crackers in a resealable bag and using a rolling pin, roll over the crackers back and forth until crumbs.
Next, in another bowl, mix together the butter and sugars with an electric mixer until light and fluffy. Mix in the egg and vanilla until well combined, then mix in the flour mixture.
Spread about half of the cookie dough on the bottom of the 13×9-inch baking dish. Butter or grease your hands a little if they stick to the dough too much. You can use your fingers or back of a fork to help form a nice even layer.
Unwrap the chocolate bars and place them in a single layer on top of the cookie. Break the bars into pieces to fit around the edge if necessary. I used the regular Hershey’s chocolate bars (not the king size).
Spread the marshmallow fluff on top of the chocolate bars. Do NOT use regular marshmallows. They will melt.
Lastly, you’ll want to cover the marshmallow fluff with the remaining cookie dough. You have a couple of choices. You can take some of the cookie dough, flatten it in your hand then place on top of the marshmallow fluff in pieces.
OR my new preferred way, is to roll out the remaining dough on a piece of parchment paper or silicone mat to form a 13×9 inch rectangle the same size as your pan. Flip it over on top of the marshmallow fluff then peel off the parchment paper or silicone mat. With your fingers fix any holes, but don’t worry if there are some open spots!
Bake the S’mores Bars until they are golden brown around the edges.
Yes, I know there are many s’more bar recipes out there. The ones I have seen are all made in small pans. A small pan is not going to cut it. Like I mentioned, I made these in a 13×9-inch pan and trust me, go with the 13×9 inch pan version!
These s’more cookies will go FAST! If you want to spruce these cookies up a bit you could add all sorts of things like nuts, peanut butter, bananas, toffee bits, coconut, etc. into the middle
Some recipes call for the king size chocolate bars, but like I mentioned above, I used regular sized chocolate bars. Unfortunately, you do need quite a few to fill a 13×9-inch pan (like 9 chocolate bars…) so look for a multi-pack in the candy section of your grocery store to save some money.
You could also just use chocolate chips if you want or melt the chocolate chips, spread on wax paper, cool until hard, and use that instead of the chocolate bars. If you do just use chocolate chips, it may take some extra effort spreading the marshmallow fluff on top since you won’t have a flat surface like the bars.
Be sure to cool the S’mores Bars so you can cut into squares. The chocolate and marshmallow may be a little ooey gooey while warm. I personally love that, but if you don’t let them cool completely first. I
Check out this quick video to see how easy these dessert bars are to put together…
Easy S'mores Bars Cookie Recipe
Ingredients
- 2 1/2 cups all-purpose flour
- 1 1/2 cups graham cracker crumbs
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup unsalted butter softened
- 3/4 cup light brown sugar
- 3/4 cup granulated sugar
- 2 large eggs
- 2 teaspoons vanilla
- 9 (~1.5 ounce) regular size chocolate bars (such as Hershey's, but not King size)
- 16 ounce tub marshmallow fluff
Instructions
- Preheat oven to 350 degrees F. Lightly grease a 13x9-inch baking dish with shortening or nonstick spray.
- In a medium bowl, mix together flour, graham cracker crumbs, baking soda, and salt until well combined.
- In a separate large bowl, mix together butter and sugars with an electric mixer on medium speed until well combined. Mix in egg and vanilla until well combined then flour mixture.
Spread half of cookie batter on bottom of greased baking dish using your fingers or back of a fork. Top with chocolate bars in a single layer. Break chocolate bars as needed to cover cookie dough to sides of pan. Spread marshmallow fluff on top of chocolate.
Take remaining cookie dough and spread in a thin even layer on a piece of parchment paper (or wax paper or silicone mat) to form a rectangle about 13x9 inches. Place dough on top of marshmallow fluff with parchment paper side up. Carefully peel back parchment paper and discard. With your fingers fix any holes in the top layer of cookie dough.
- Bake cookie bars for about 25 to 30 minutes or until golden brown around edges.
Recipe Video
Recipe Notes
SNAPPY TIPS: Instead of flattening the top cookie layer on a piece of parchment paper, you can take small amounts of dough and flatten with your hands then place on top of marshmallow fluff covering as much of the marshmallow as possible. Don't worry if the marshmallow is not covered 100%!
SNAPPY SUBSTITUTIONS: If you have to, you can substitute king size chocolate bars or chocolate chips. The marshmallow fluff can be difficult to spread over chocolate chips though. Do NOT substitute regular marshmallows for the marshmallow fluff. Marshmallows will melt in the oven and the cookie bars will not turn out well.
JHetey says
Hi! Do these freeze well? Thanks!!
Lisa Huff says
I haven’t tried freezing so can’t say for sure, but would guess they’d be ok.
Liz says
These are AMAZING. Thank you for the recipe. (I patted out the upper crust on a flexible cutting board, thanks to other bakers for the idea).
Lisa Huff says
Thank you! So happy to hear you enjoyed!
Diane D. says
I would love to try this recipe. Is the marshmallow fluff easy to spread on top of the chocolate bars or can it go in the microwave for 30 seconds or so to help it spread easier?
Lisa Huff says
It’s not bad to spread. I would suggest putting smaller spoonfuls around the pan then use an offset spatula to spread. Since the chocolate bars are flat it’s not too hard to spread but if you use chocolate chips instead it may be a bit more difficult. You could also put the chocolate bars upside down so they’re even more flat. I would not suggest putting it in the microwave because it may melt too much.
Jessica says
Is it better to serve them straight out of the oven or cooled? I’m making them tonight.
Lisa Huff says
Hi! Sorry, just seeing this. I would suggest letting them cool otherwise the center will be really mushy. I personally like them cold and put them in the fridge sometimes. :) Hope you liked them!
NL says
How far in advance can you make/keep these? Any suggestions for storing?
Lisa Huff says
I haven’t had to store them long because they typically go fast, but I would suggest keeping them in the pan (so they don’t try out), cover well, and I’d put them in the fridge (although they’d be fine on the counter, I just like to put things in the fridge in the summer when it’s hot), and I’m sure they’d be fine at least a few days if not longer.
Jess says
Just made 3 batches for a graduation celebration tomorrow! So far so good, I’m waiting til they cool to cut into one for a taste test. Pressing the top layer of dough on wax paper is definitely the way to go-I can’t imagine trying to spread it onto that gooey marshmallow fluff.
Lisa Huff says
Oh wow, 3 batches! They are delicious so I’m sure they’ll go fast! Hope the graduation celebration goes well!
Anna-Marie says
I’m making these for the 4th time. Easy and freaking delicious……
Lisa Huff says
4th time, oh my goodness that’s fabulous! Happy to hear you enjoy them!
Misty Colby says
This is the same recipe from 8/26/14 on Cooking Classy. You just doubled it to make a larger pan. tsk tsk
Lisa Huff says
There are hundreds of S’mores cookie/bar recipes on the internet so I can see how they would all be similar. I’ve never seen that particular one until today and although similar they are not exactly the same. Thanks for letting me know of the similarities.
Heather says
I’ve made these before using a slightly different recipe. These just came out of the oven and I can’t wait to try them! My little tip: spread the to layer of cookie dough out on a sheet of wax paper, then lay over the marshmallow fluff. Easy peasy!
Leah says
These bars didn’t work for me. Maybe because I used marshmallow instead of fluff?
Lisa Huff says
Yep, that would do it. You can not substitute marshmallows for fluff. Marshmallows melt very quickly in the oven and definitely would not work well in this recipe.
Ally's Sweet & Savory Eats says
I make this same recipe (or it’s very similar), they are always a hit, especially in the summer!
allie @ Through Her Looking Glass says
Dear Lisa, these bars are pure decadence! You are so right. A small pan just ain’t gonna cut it. Not in our household of four boys anyway….can’t wait to try this awesome recipe!
Joan Hayes says
Lisa, these look AWESOME and so yummy! Perfect for summer and no camp fires required! : )