S’mores Cookie Bars Recipe
Introduction
S’mores cookie bars bring the nostalgic flavors of campfire s’mores into an easy-to-make, shareable dessert. Rich chocolate, sweet marshmallow fluff, and a graham cracker-infused cookie base combine for a truly irresistible treat.

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 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 evenly on top of the chilled dough layer. Spread the marshmallow fluff evenly over the chocolate layer.
- Step 6: Gently flip the remaining chilled dough on top of the marshmallow layer, pressing lightly to seal. Bake for approximately 25 minutes or until golden brown.
- Step 7: Allow the bars to cool completely before slicing into squares and serving.
Tips & Variations
- Use mini marshmallows in place of marshmallow fluff for a slightly different texture and a gooey topping.
- Substitute dark chocolate bars instead of Hershey bars for a richer chocolate flavor.
- Press the dough gently to ensure the layers stay together during baking.
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 one week. Reheat briefly in the microwave for a soft, gooey treat.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use regular marshmallows instead of marshmallow fluff?
Yes, you can use mini marshmallows evenly spread over the chocolate layer. They will melt and create a similar gooey texture, but marshmallow fluff creates a smoother topping.
Do I need to freeze the dough before baking?
Freezing the bottom dough layer helps it hold together when you add the chocolate and marshmallow layers and prevents the bars from becoming too messy during baking.
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S’mores Cookie Bars Recipe
- Total Time: 40 minutes
- Yield: 16 bars 1x
Description
Delight in these irresistible S’mores Cookie Bars that combine a buttery cookie base with layers of melted Hershey chocolate and fluffy marshmallow topping. Perfectly balancing sweet and gooey textures, these bars are a nostalgic treat inspired by the classic campfire s’more.
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 and Topping
- 5 standard Hershey bars, broken into pieces
- 1 & 1/2 cups marshmallow fluff
Instructions
- Preheat and Prepare Pan: Preheat your oven to 350°F (175°C) and line an 8×8 inch baking pan with parchment paper to prevent sticking and make it easier to remove the bars.
- Cream Butter and Sugars: In a mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until the mixture is fluffy and well combined. This creates a light and tender cookie base.
- Add Egg and Vanilla: Beat in the egg and vanilla extract until fully incorporated, ensuring the dough binds together nicely.
- Mix Dry Ingredients: Gradually add the all-purpose flour, finely crushed graham crackers, salt, and baking soda to the wet ingredients. Mix until just combined to avoid overworking the dough.
- Form Base Layer: Press half of the dough evenly into the prepared baking pan. Freeze this layer for about 15 minutes to firm it up for the next steps.
- Layer Chocolate and Marshmallow: Break the Hershey bars into pieces and arrange them evenly over the chilled dough layer. Then, spread the marshmallow fluff evenly on top of the chocolate, creating the s’mores filling.
- Top with Remaining Dough: Carefully flip the remaining dough layer from the freezer on top of the marshmallow fluff and chocolate layer, covering it completely.
- Bake: Bake the assembled bars in the preheated oven for approximately 25 minutes, or until the top is golden brown and firm to the touch.
- Cool and Slice: Allow the bars to cool completely in the pan before slicing into squares to ensure they hold together well.
Notes
- Freezing the first layer of dough helps prevent the marshmallow fluff from melting into the bottom layer during baking.
- You can substitute milk chocolate Hershey bars with dark chocolate for a richer flavor.
- To make cleanup easier, use parchment paper or aluminum foil lining the pan.
- Store leftover bars in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.
- For an extra gooey texture, slightly underbake the bars and let them set while cooling.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Baking
- Method: Baking
- Cuisine: American
Keywords: S’mores cookie bars, s’mores dessert, chocolate marshmallow bars, baked s’mores, Hershey bar recipe, graham cracker bars

