Cookie Butter S’mores Bars

Elevate your classic s’mores by making Cookie Butter S’mores Bars

Cookie Butter S'mores Bars stacked

I LOVE anything s’mores. Seriously, if there is any variation of s’mores on a menu, I will order it. And these Cookie Butter S’mores Bars are no different.

The gooey marshmallows and melty chocolate get me every time.

My favorite shortcut s’mores dessert is S’mores Dip, by the way. We make it way too often at home. ;)

These Cookie Butter S’mores Bars are thick, soft and so chewy. Such a fun variation on a classic dessert!

What do I need to make these?

  • butter
  • brown sugar
  • egg
  • vanilla
  • flour
  • graham cracker crumbs
  • baking soda
  • salt
  • Cookie Butter (Biscoff Spread)
  • Hershey’s bars or your favorite chocolate
  • large marshmallows

Basically, you’re going to be making a cookie dough that’s infused with graham cracker crumbs. It’ll be like a soft and chewy graham cracker.

You’ll put that at the bottom of your dish and then layer cookie butter (I use the Biscoff brand, but you could also use the one from Trader Joe’s).

As for chocolate, you can use whichever you’d like! I love to use Hershey’s bars because I love how they melt and are spread all over. I prefer it over chocolate chips in this case, but you certainly could use those if that’s all you have!

Cookie Butter S'mores bars sliced in hand

Can I make these in advance?

You can! Actually, I recommend that!

In order for the bars to keep their shape, it’s best if you let them bake and fully cool, ideally overnight before cutting into them. That way you get clean cuts of a tall, chewy cookie with a gooey middle.

If you cut into them too soon, the cookie crumbles up and the melted chocolate and marshmallows spread. Just as delicious, but not as fun!

Cookie Butter S’mores Bars

These chewy, gooey s'mores bars are full of cookie butter and a perfect twist to a classic dessert!


  • 3/4 cup butter melted
  • 3/4 cup brown sugar
  • 1 egg
  • 2 tsp vanilla
  • 1 1/4 cup flour
  • 1 cup graham cracker crumbs
  • 1/2 tsp baking soda
  • 1/4 tsp salt
  • 3/4 cup Cookie Butter (Biscoff spread)
  • 2 Hershey's bars jumbo sized
  • 1 bag large marshmallows


  • Preheat oven to 350 degrees. Grease and line a 9×9 baking dish with parchment paper and set aside.
  • In a large bowl, whisk the butter and sugar. Add in the egg and vanilla and whisk again. Stir in the dry ingredients (flour, graham crumbs, baking soda and salt) until just combined.
  • Press half of the cookie dough into the bottom of the dish. Spread the cookie butter over that and then layer the chocolate bars on top. Add the marshmallows in a neat row over the chocolate and then top with the remaining cookie dough. I like to roll it into balls and press them flat on my hand and then layer over the marshmallows.
  • Bake for 30-35 minutes or until the top is deeply golden. I suggest adding a baking sheet on the bottom rack of your oven to catch any spills since sometimes the marshmallows do overflow.
  • Let it fully cool before slicing. Enjoy!

If you love s’mores, be sure to give these recipes a try:

These are the perfect handheld dessert for fall! Mini campfire S'mores Pies are the perfect blend of sweet, crunchy and smooth!

Mini S’mores Pies

S’mores Pinwheels

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