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S’mores Cookie Bars Recipe

4.6 from 65 reviews

Delightfully rich and gooey S’mores Cookie Bars combine the classic flavors of graham crackers, melted chocolate, and marshmallow fluff in a soft, chewy baked treat. Perfect for satisfying your sweet tooth with a nostalgic campfire-inspired dessert that’s easy to make in a 9×13 inch pan.

Ingredients

Scale

Wet Ingredients

  • 1/2 cup butter, softened
  • 1/3 cup brown sugar
  • 1/4 cup granulated sugar
  • 1 egg
  • 1 tsp vanilla extract

Dry Ingredients

  • 1 1/2 cups all-purpose flour
  • 1/2 cup graham crackers, finely crushed
  • 1/4 tsp salt
  • 3/4 tsp baking soda

Mix-ins

  • 5 standard Hershey bars, chopped
  • 1 1/2 cups marshmallow fluff

Instructions

  1. Preheat Oven: Preheat your oven to 350°F (175°C) to ensure it reaches the correct temperature before baking the bars.
  2. Prepare Baking Pan: Line a 9×13 inch baking pan with parchment paper to prevent sticking and make removal easy.
  3. Cream Butter and Sugars: In a mixing bowl, beat together the softened butter, brown sugar, and granulated sugar until the mixture becomes light and fluffy, which helps create a tender texture.
  4. Add Egg and Vanilla: Incorporate the egg and vanilla extract into the creamed mixture and mix thoroughly until smooth and well combined.
  5. Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour, finely crushed graham crackers, salt, and baking soda to ensure even distribution of leavening and flavor.
  6. Mix Dry into Wet: Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined to prevent overmixing and maintain a soft texture.
  7. Add Chocolate and Marshmallow: Carefully fold in the chopped Hershey bars and marshmallow fluff, spreading the gooey bits evenly throughout the dough.
  8. Spread and Bake: Spread the cookie dough evenly into the prepared baking pan, smoothing the top. Bake in the preheated oven for 20-25 minutes, or until the edges turn golden brown and the center is set.
  9. Cool and Slice: Remove from the oven and let the bars cool for 10 minutes in the pan. Use the parchment paper to lift the bars out, then cool completely on a wire rack before slicing into squares for serving.

Notes

  • Ensure the butter is softened to room temperature for easier mixing.
  • Do not overmix the dough after adding dry ingredients to avoid tough bars.
  • Use parchment paper to lift the bars out cleanly and avoid breaking.
  • Store leftover bars in an airtight container at room temperature for up to 3 days.
  • For a toasted marshmallow flavor, briefly broil the top of the bars after baking until golden brown but watch carefully to prevent burning.

Keywords: S'mores, cookie bars, chocolate, marshmallow, graham crackers, dessert, baked treat, campfire dessert