S’mores Cookie Bars Recipe
Introduction
S’mores Cookie Bars bring the nostalgic flavors of a campfire favorite into a delicious, easy-to-make dessert. Combining a buttery graham cracker cookie base, melted chocolate, and fluffy marshmallow layers, these bars are perfect for sharing or satisfying a sweet craving.

Ingredients
- 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)
- 5 standard Hershey bars
- 1 1/2 cups marshmallow fluff
Instructions
- Step 1: Preheat your oven to 350°F and line an 8×8 inch baking pan with parchment paper.
- Step 2: In a mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until fluffy. Beat in the egg and vanilla extract.
- Step 3: Gradually add the flour, crushed graham crackers, salt, and baking soda; mix until just combined.
- Step 4: Press half of the dough into the prepared baking pan and freeze for about 15 minutes.
- Step 5: Layer broken pieces of Hershey bars on top of the first dough layer, then spread marshmallow fluff evenly over the chocolate.
- Step 6: Flip the chilled remaining dough layer on top to cover the marshmallow and chocolate, pressing gently to seal.
- Step 7: Bake for approximately 25 minutes or until the top is golden brown.
- Step 8: Allow the bars to cool completely in the pan before slicing into squares.
Tips & Variations
- For an extra gooey texture, use mini marshmallows in place of marshmallow fluff.
- Swap Hershey bars for your favorite chocolate bars or add chopped nuts for crunch.
- Chilling the dough before baking helps keep the layers distinct and prevents spreading.
Storage
Store the s’mores cookie bars in an airtight container at room temperature for up to 3 days. For longer storage, keep them in the refrigerator for up to a week. Reheat briefly in the microwave to soften the marshmallow and chocolate before serving.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different size baking pan?
Yes, but baking times may vary slightly. Using a larger pan will result in thinner bars that bake faster, while a smaller pan produces thicker bars that need more time.
What if I don’t have marshmallow fluff?
You can substitute with mini marshmallows melted slightly or homemade marshmallow cream. Regular marshmallows might not spread as evenly but work well when chopped and layered.
Print
S’mores Cookie Bars Recipe
- Total Time: 45 minutes
- Yield: 16 bars 1x
Description
S’mores Cookie Bars combine the classic campfire flavors of graham crackers, chocolate, and marshmallows into an easy-to-make, chewy bar. These delightful dessert bars feature a buttery cookie crust layered with melted Hershey’s chocolate bars and creamy marshmallow fluff, baked to golden perfection. Perfect for satisfying your sweet tooth with nostalgic s’mores goodness indoors.
Ingredients
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
Filling
- 5 standard Hershey bars, broken into pieces
- 1 & 1/2 cups marshmallow fluff
Instructions
- Prepare Oven and Pan: Preheat your oven to 350°F (175°C) and line an 8×8 inch baking pan with parchment paper to prevent sticking and for easy removal of bars.
- Make Cookie Dough: In a mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until the mixture is fluffy and light. Then, beat in the egg and vanilla extract until fully incorporated.
- Add Dry Ingredients: Gradually add the all-purpose flour, finely crushed graham crackers, salt, and baking soda into the creamed mixture. Mix until just combined to keep the dough tender.
- Chill First Dough Layer: Press half of the cookie dough evenly into the prepared baking pan, forming a firm base. Place the pan in the freezer for about 15 minutes to chill and set before adding layers.
- Layer Chocolate and Marshmallow: Remove the pan from the freezer. Layer broken Hershey bar pieces evenly over the chilled dough base. Next, spread the marshmallow fluff gently and evenly over the chocolate layer.
- Top With Remaining Dough: Carefully flip the remaining chilled dough layer on top of the marshmallow fluff, covering the filling. This acts as the top crust.
- Bake: Bake the assembled bars in the preheated oven for approximately 25 minutes or until the top is golden brown and the edges are set.
- Cool and Slice: Allow the bars to cool completely in the pan. Once cooled, lift them out using the parchment paper and cut into squares for serving.
Notes
- Freezing the dough base helps create distinct layers and prevents the marshmallow from melting into the dough.
- Use parchment paper for easy removal and cleanup.
- Letting the bars cool thoroughly ensures cleaner slices and better texture.
- Store leftover bars in an airtight container at room temperature for up to 3 days.
- You can substitute Hershey bars with any milk chocolate bar if preferred.
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Keywords: S’mores, cookie bars, graham crackers, Hershey chocolate, marshmallow fluff, easy dessert, baked bars

