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The Best S’mores Cookie Bars

by Jessie Daye

First published: March 11, 2024 | Updated: June 22, 2026
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Nothing better than a warm buttery S’mores Bar! The brown sugar graham cracker crust on this S’mores cookie bar is incredible. Scroll down for the recipe.

Extra gooey. Super delicious.

Version above has been refrigerated and has a layer of cookie butter.

The Best S’mores Cookie Bars

Author: Jessie Daye
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Ingredients

  • ½ cup unsalted butter softened
  • ½ cup white granulated sugar
  • ¼ cup brown sugar packed
  • 1 egg
  • 1 teaspoon vanilla extract or paste
  • 1 teaspoon baking powder
  • 1 ¼ cup all purpose flour
  • 1 teaspoon kosher salt
  • 6 graham crackers crushed into crumbs
  • 3 Hershey chocolate bars
  • 1 jar of marshmallow creme
  • **Extras**
  • ½ cup Biscoff or Peanut Butter warmed up

Method

  1. Preheat oven to 350 degrees.
  2. Pulse your graham crackers in a food processor or finely crush in a bag. Set aside.
  3. In a large bowl, using a handheld mixer, beat butter, granulated sugar, brown sugar, egg, and vanilla. Mix in flour, crushed graham crackers, baking powder, and Kosher salt.
  4. Divide your dough in half and line your 8×8 baking dish with parchment. Press half of the dough into the bottom of the pan. ** I used a 6”x6” pan in the above picture so they are thicker bars. **
  5. Layer the dough with chocolate bars or chips, (then melted cookie butter if desired), and finally the marshmallow creme. Gently sprinkle the remaining graham cracker dough all over the top.
  6. Bake for 30 minutes or until golden brown.
  7. Remove from oven and let the bars cool on the counter for 30 minutes. Place in the fridge for two hours so they can harden enough for a clean cut or eat warm. Store in air-tight container.

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Hi, I'm Jessie. 

I’m a Los Angeles mama, home renovator, and lifelong creative, sharing the things that make everyday life a little more beautiful. I believe food is one of the best ways to bring people together, which is why I love cooking: it turns an ordinary Tuesday into something worth remembering. From recipes I make on repeat to DIY projects, home design, and a little bit of real life in between — welcome to my corner of the internet. I’m so glad you’re here.

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