S’mores Cookie Bars Recipe
Introduction
These S’mores cookie bars combine the classic flavors of a campfire treat with the ease of a baked dessert. Soft, chewy, and full of chocolate and marshmallow goodness, they’re perfect for any occasion or craving.

Ingredients
- 1/2 cup butter (softened, salted or unsalted)
- 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 graham crackers (finely crushed, about 3.5 sheets, for the cookie dough)
- 1/4 tsp salt
- 3/4 tsp baking soda
- 5 standard Hershey bars
- 1 1/2 cups marshmallow fluff
Instructions
- Step 1: Preheat your oven to 350°F (175°C). Lightly grease or line a 9×9-inch baking pan with parchment paper for easy removal.
- Step 2: In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until smooth and fluffy.
- Step 3: Beat in the egg and vanilla extract until well combined.
- Step 4: In a separate bowl, whisk together the all-purpose flour, crushed graham crackers, salt, and baking soda.
- Step 5: Gradually add the dry ingredients to the wet ingredients, mixing until just combined to form the cookie dough.
- Step 6: Press half of the cookie dough evenly into the prepared baking pan to form the base layer.
- Step 7: Break the Hershey bars into pieces and sprinkle them evenly over the dough layer.
- Step 8: Spread the marshmallow fluff evenly on top of the chocolate layer.
- Step 9: Crumble the remaining cookie dough over the marshmallow layer in small chunks to cover most of the surface.
- Step 10: Bake in the preheated oven for 25-30 minutes, until the top is golden and the marshmallow layer is set.
- Step 11: Allow the bars to cool completely in the pan before cutting into squares and serving.
Tips & Variations
- For an extra gooey treat, add mini marshmallows on top of the fluff before adding the dough bits.
- Use dark or milk chocolate bars according to your preference for a different flavor profile.
- Adding a pinch of cinnamon to the dough can add a warm, cozy note.
Storage
Store the s’mores cookie bars in an airtight container at room temperature for up to 3 days. For longer storage, keep them refrigerated for up to a week. Warm briefly in the microwave before serving for a soft, melty texture.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use marshmallows instead of marshmallow fluff?
Yes, mini marshmallows can be used as a substitute. Spread them evenly over the chocolate layer, but keep an eye during baking to avoid excessive browning.
Do I have to crush the graham crackers for the dough?
Yes, crushing the graham crackers finely helps incorporate them evenly and adds the classic s’mores flavor to the cookie base.
PrintS’mores Cookie Bars Recipe
These S’mores Cookie Bars combine the classic campfire flavors of graham crackers, chocolate, and marshmallow into a deliciously chewy, gooey dessert that’s perfect for any occasion. Soft cookie base is layered with rich Hershey’s chocolate bars and fluffy marshmallow fluff, creating an irresistible treat reminiscent of traditional s’mores but in an easy-to-make bar form.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 12 bars 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Cookie Dough
- 1/2 cup Butter (softened, salted or unsalted)
- 1/3 cup Brown sugar
- 1/4 cup Granulated sugar
- 1 Egg
- 1 tsp Vanilla extract
- 1 & 1/2 cup All-purpose flour
- 1/2 cup Graham crackers (finely crushed, about 3.5 sheets)
- 1/4 tsp Salt
- 3/4 tsp Baking soda
Filling
- 5 standard Hershey bars
- 1 & 1/2 cup Marshmallow fluff
Instructions
- Prepare the Dough: In a mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy. Add the egg and vanilla extract, beating well to combine. In a separate bowl, whisk together the all-purpose flour, finely crushed graham crackers, salt, and baking soda. Gradually add the dry ingredients to the wet mixture, mixing until fully incorporated to form the cookie dough.
- Assemble the Bars: Preheat your oven to 350°F (175°C). Line a baking pan (approximately 8×8 inches) with parchment paper to prevent sticking. Press half of the cookie dough evenly into the bottom of the pan to form a base layer. Lay the Hershey bars evenly over this cookie base, making sure to cover the surface.
- Add the Marshmallow Layer: Spread the marshmallow fluff evenly over the chocolate layer, being careful to cover all areas so the marshmallows will melt nicely and stick to the layers.
- Top with Remaining Dough: Crumble or dollop the remaining half of the cookie dough over the marshmallow layer. Don’t worry if it’s not perfectly even, as it will spread slightly while baking.
- Bake the Bars: Place the baking pan in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the marshmallow layer is bubbly. Keep an eye on the edges to avoid burning.
- Cool and Serve: Remove the pan from the oven and allow the bars to cool completely in the pan. Once cooled, transfer the bars to a cutting board using the parchment paper edges and cut into squares. Serve at room temperature for best texture and flavor.
Notes
- For easier spreading, slightly warm the marshmallow fluff before layering.
- Use parchment paper for easy removal and less mess during cleanup.
- Chocolate bars can be swapped for milk or dark chocolate depending on preference.
- Store bars in an airtight container at room temperature for up to 3 days.
- These bars can be refrigerated to extend freshness, but bring to room temperature before serving for best texture.
Keywords: S’mores, cookie bars, chocolate, marshmallow, graham crackers, dessert, easy recipe, baking

