Dessert

S’mores Cookie Bars Recipe

ByGabriel Langdon January 27, 2026January 27, 2026

Introduction

These S’mores Cookie Bars bring the classic campfire treat into your kitchen with a chewy, chocolatey twist. Layers of graham cracker cookie, melted chocolate, and fluffy marshmallow fluff make for an irresistible dessert perfect for any occasion.

The image shows a close-up of two stacked square cookie bars with three visible layers. The bottom layer is a golden-brown thick cookie crust with a slightly crumbly texture. The middle layer is melted dark chocolate, smooth and shiny, spread evenly. The top layer has white marshmallow pieces that appear soft and fluffy, slightly melted into the chocolate layer beneath. The cookie bars rest on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

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 (175°C) 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 until well combined.
Step 3: Gradually add the flour, finely crushed graham crackers, salt, and baking soda; mix until just combined to form the dough.
Step 4: Press half of the dough evenly into the prepared pan. Place the pan in the freezer for about 15 minutes to firm up.
Step 5: Remove from the freezer and layer broken pieces of Hershey bars over the chilled dough. Spread the marshmallow fluff evenly on top of the chocolate layer.
Step 6: Carefully flip the remaining chilled dough layer on top to cover the marshmallow layer. Bake for approximately 25 minutes or until the top is golden brown.
Step 7: Allow the bars to cool completely in the pan before slicing into squares to serve.

Tips & Variations

For an extra chocolatey kick, add chocolate chips to the cookie dough before layering.
Substitute Hershey bars with your favorite chocolate for a personalized flavor.
Sprinkle a pinch of sea salt on top before baking to enhance the sweetness.

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. Reheat briefly in the microwave for a soft, gooey treat.

How to Serve

The image shows a stack of three square dessert bars on a white marbled surface, each bar with three layers: the bottom layer is golden brown and crumbly, the middle layer is thick and dark brown with a smooth, melted chocolate texture, and the top layer is fluffy white marshmallow that is slightly melted and soft. The bars are cut cleanly, showing the clear separation of layers, and the overall look is gooey and inviting. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use mini marshmallows instead of marshmallow fluff?

You can, but marshmallow fluff spreads more evenly and melts better for this recipe. If using mini marshmallows, layer them generously and watch closely while baking to avoid burning.

Do I need to freeze the dough before baking?

Freezing the dough helps firm it up so you can easily layer the ingredients without mixing or spreading. It also ensures even baking and a neater final appearance.