S’mores Cookie Bars
These S’mores Cookie Bars bring all the flavors of your favorite campfire treat into one easy, oven-baked dessert. They start with a soft graham cracker cookie base, followed by a rich layer of chocolate and a gooey marshmallow topping that turns perfectly golden in the oven. Sweet, chewy, and full of nostalgic flavor, they’re perfect for parties, potlucks, or anytime you're craving something cozy and chocolatey.
Equipment
- 8 inch square pan
Ingredients
- ½ cup unsalted butter softened
- ½ cup dark brown sugar packed
- ¼ cup granulated white sugar
- 1 large egg + egg yolk room temperature
- 1 teaspoon pure vanilla extract
- 1 ¼ cups all-purpose flour
- 12-13 graham crackers 7 for lining the bottom of the pan, 6 for turning into crumbs
- ½ teaspoon baking soda
- ¼ teaspoon salt
- ¾ cup semi-sweet chocolate chips or chunks
- 1 ½ cups mini marshmallows divided
- Optional: Hershey’s chocolate squares for topping
Instructions
- Preheat oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper, leaving an overhang.
- Place 6 graham crackers in a food processor and pulse until finely ground. Alternatively, place them in a zip-top bag and crush them with a rolling pin until you have fine crumbs.This should equal ¾ cup. Set aside.
- In a medium bowl, whisk together flour, graham cracker crumbs, baking soda, and salt.
- In a large bowl, whisk together softened butter, brown sugar and granulated sugar until smooth.
- Add the egg, egg yolk, and vanilla extract; mix well.
- Stir dry ingredients into wet ingredients until just combined. Fold in the chocolate chips and quarter cup of the mini marshmallows.
- Line the graham crackers in single layer into the prepared pan. Gently press about ⅔ of the cookie dough on top of the graham crackers.
- Layer on the remaining marshmallows and Hershey's chocolate (if using), then scatter and lightly press the remaining cookie dough over the top.
- Bake for 22–26 minutes, or until edges are golden and center is just set. Cool completely before slicing.
Notes
- Don’t Overbake: The bars will continue to set as they cool. Remove from the oven when the edges are golden and the center is slightly soft.
- Lining the Pan: Use parchment paper with overhang to easily lift the bars out of the pan for clean slicing.
- Chocolate Options: Feel free to mix semi-sweet chocolate chips with chopped Hershey’s bars for that classic s’mores flavor.
The provided nutritional information is an estimate per serving. Accuracy is not guaranteed.
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