S'mores Bars

Name: S'mores Bars (Baked Graham Cracker & Marshmallow)
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 16 servings
Cuisine: American
Ingredients: 1.5 cups graham cracker crumbs; 1 cup all-purpose flour; 1/2 cup unsalted butter, softened; 1/2 cup packed brown sugar; 1 large egg; 1/2 tsp baking soda; 1/4 tsp salt; 1 (7 oz) jar marshmallow fluff; 2 (1.55 oz) milk chocolate bars

S'mores bars combine a buttery graham cracker cookie base with a layer of marshmallow fluff and milk chocolate, baked together for a soft, gooey dessert that captures campfire flavor without leaving the kitchen.

🌍American 🏷️S'mores bars 🏷️Dessert 🏷️Baking 🏷️Graham cracker Marshmallow

🏷️

🏷️Chocolate

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TikTok

Total

40 min

Servings

16

Difficulty

Easy

Est. Cost

$19–$31

Recipe Source

View original recipe

From TikTok

-0:00

TikTok

Ingredients

1.5 cups graham cracker crumbs
1 cup all-purpose flour
1/2 cup unsalted butter, softened
1/2 cup packed brown sugar
1 large egg
1/2 tsp baking soda
1/4 tsp salt
1 (7 oz) jar marshmallow fluff
2 (1.55 oz) milk chocolate bars

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Instructions

1
Preheat your oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper, leaving an overhang on the sides to easily lift the bars out later.
2
In a large bowl, create the graham cracker cookie dough. (Note: The video shows combining ingredients, but a standard method would be to cream the softened butter and brown sugar together, beat in the egg, then mix in the graham cracker crumbs, flour, baking soda, and salt until a dough forms).
3
Press about two-thirds of the cookie dough into the bottom of the prepared pan, creating an even layer.
4
Spread the marshmallow fluff evenly over the cookie dough base.
5
Scatter pieces of the milk chocolate bars over the marshmallow fluff.
6
Take the remaining one-third of the cookie dough and drop small dollops over the chocolate layer.
7
Add a few more dollops of marshmallow fluff and the remaining chocolate pieces on top.
8
Bake for 20-25 minutes, or until the cookie dough is cooked through and the marshmallow is lightly golden.
9
Let the bars cool completely in the pan before lifting them out with the parchment paper and cutting into squares.

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Tips & Notes

Pro tips

Spread the marshmallow fluff in an even layer before baking to ensure consistent texture throughout—use an offset spatula dipped in water to prevent sticking.
Place chocolate bars or pieces on top of warm (but not hot) marshmallow layer so they soften and adhere without sliding off.
Do not overbake—marshmallow fluff can brown quickly. Watch around 12–15 minutes; stop when the base is golden and the marshmallow is set but still yields slightly to touch.
Cool the bars completely before cutting for clean edges; warm bars will be gooey and difficult to slice neatly.

Substitutions

Graham cracker crumbs → digestive biscuit crumbs or vanilla wafer crumbs (adjust sweetness if needed)
Marshmallow fluff → 2 cups mini marshmallows or 1.5 cups chopped fresh marshmallows (may brown differently)
Milk chocolate → dark chocolate, semi-sweet chocolate, or chocolate chips (note: dark chocolate adds less sweetness)
All-purpose flour → gluten-free all-purpose flour (blend may behave differently; check doneness at lower end of bake time)

Storage & make-ahead

Store cooled bars in an airtight container at room temperature for up to 3 days, or freeze for up to 2 weeks; thaw at room temperature before serving.

Common Questions

Can I make s'mores bars ahead of time?

Yes. Store baked and cooled bars in an airtight container at room temperature for up to 3 days. They can also be frozen for up to 2 weeks.

Why is my marshmallow layer not fluffy after baking?

Marshmallow fluff spreads and sets as it bakes—it won't puff up like toasted marshmallows. For a fluffier texture, spread the marshmallow layer thicker or use fresh marshmallows chopped into pieces instead.

Can I substitute the milk chocolate?

Yes. Dark chocolate, semi-sweet chocolate, or even white chocolate work well. You can also use chocolate chips instead of bars for easier distribution.

Do I need to use marshmallow fluff or can I use regular marshmallows?

Either works. Marshmallow fluff spreads evenly for a uniform layer. Mini marshmallows or chopped regular marshmallows create a chunkier texture and may brown differently.

How do I know when s'mores bars are done baking?

The graham cracker base should be golden and firm, and the marshmallow layer should be set but still soft when lightly touched. The chocolate will be melted and slightly soft.