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S’mores Cookie Bars Recipe

4.8 from 114 reviews

Delightful S’mores Cookie Bars feature a buttery graham cracker-infused cookie base layered with classic Hershey chocolate and marshmallow fluff, baked to golden perfection. This treat captures the nostalgic flavors of s’mores in an easy-to-make bar form, perfect for sharing or satisfying your sweet tooth.

Ingredients

Scale

Cookie Dough

  • 1/2 cup softened butter
  • 1/3 cup brown sugar
  • 1/4 cup granulated sugar
  • 1 egg
  • 1 tsp vanilla extract
  • 1 & 1/2 cups all-purpose flour
  • 1/2 cup finely crushed graham crackers (about 3.5 sheets)
  • 1/4 tsp salt
  • 1/4 tsp baking soda

Fillings

  • 5 standard Hershey bars, broken into pieces
  • 1 & 1/2 cups marshmallow fluff

Instructions

  1. Preheat Oven and Prepare Pan: Preheat your oven to 350°F (175°C) and line an 8×8 inch baking pan with parchment paper for easy removal.
  2. Cream Butter and Sugars: In a mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until the mixture is light and fluffy, which ensures a tender texture.
  3. Add Egg and Vanilla: Beat in the egg and vanilla extract until fully incorporated for a smooth batter.
  4. Incorporate Dry Ingredients: Gradually add the all-purpose flour, finely crushed graham crackers, salt, and baking soda; mix gently until just combined to avoid overworking the dough.
  5. Chill Dough Base: Press half of the dough evenly into the prepared baking pan. Place it in the freezer for about 15 minutes to firm up and create a sturdy base for layering.
  6. Layer Chocolate and Marshmallow: Scatter broken pieces of Hershey bars evenly over the chilled dough layer, then spread the marshmallow fluff evenly on top, ensuring full coverage of chocolate pieces.
  7. Top with Remaining Dough and Bake: Flip the remaining chilled dough over the marshmallow layer, covering the entire surface. Bake in the preheated oven for approximately 25 minutes or until golden brown and set.
  8. Cool and Slice: Allow the bars to cool completely in the pan before lifting them out using the parchment paper. Slice into squares and serve.

Notes

  • Freezing the dough base before layering prevents the marshmallow fluff from melting and mixing into the dough.
  • Ensure the marshmallow fluff is spread evenly to avoid clumping and to get the true s’mores texture.
  • Use parchment paper to make removal from the pan easy and cleanup quicker.
  • Store leftovers in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
  • For a more intense chocolate flavor, substitute Hershey bars with your favorite milk or dark chocolate.

Keywords: S'mores Cookie Bars, dessert bars, graham cracker cookies, marshmallow fluff, chocolate bars, easy dessert, summer treat