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S’mores Bars

Everything you love about a campfire s’more — the gooey marshmallow, the melty chocolate, the buttery graham cracker — packed into a handheld bar you can make in your kitchen any time of year. These S’mores Bars are one of those recipes that sounds simple and delivers something genuinely spectacular. The base is a soft, chewy graham cracker cookie dough pressed into a pan. The middle is a generous layer of marshmallow fluff and Hershey’s milk chocolate. The top is more of that same dough, torn into pieces and scattered over the filling so the marshmallow and chocolate peek through. The result is gooey, chocolatey, buttery, and completely irresistible.

These bars are perfect for summer cookouts, school bake sales, potlucks, or any occasion where you need a crowd-pleasing dessert that travels well and disappears fast. They come together in about 20 minutes of active time, and the oven does the rest. Fair warning: you will want to eat one straight from the pan while they are still warm. I fully support this decision.

Why You’ll Love These S’mores Bars

No campfire required. These bars capture every element of the classic s’more in a format that is infinitely more practical and arguably even more delicious. The graham cracker dough is rich and slightly crisp on the edges while staying soft and chewy in the center. The marshmallow fluff melts into the dough during baking and creates those irresistible gooey pockets. The Hershey’s chocolate — both baked in and melted on top right out of the oven — gives you that classic s’more chocolate flavor in every single bite. They also make ahead beautifully, which makes them ideal for entertaining.

Ingredients You’ll Need

Unsalted Butter — Softened to room temperature. High-quality butter makes a noticeable difference in the flavor of the dough.

Brown Sugar — Brown sugar gives the dough a deeper, more caramel-like flavor that pairs perfectly with the graham cracker and chocolate. Do not substitute white sugar here.

Graham Cracker Crumbs — About 16 full graham cracker sheets, crushed fine. You can use a food processor or a zip-lock bag and a rolling pin. Either way works.

Marshmallow Fluff — The full 7-ounce jar. Do not skimp. This is the soul of the s’more.

Hershey’s Milk Chocolate Bars — Classic Hershey’s is the right call here. It is the s’more chocolate. 12 ounces total — some goes inside, some melts on top right out of the oven.

Stand Mixer — A KitchenAid stand mixer makes the dough effortlessly. A hand mixer works just as well.

9×13 Baking Pan — Line it with parchment paper for easy removal and clean cuts. A standard 9×13 baking pan is ideal.

How to Make S’mores Bars

Step 1: Make the Graham Cracker Dough

Preheat your oven to 350°F and line a 9×13 baking dish with parchment paper, leaving an overhang on the sides for easy removal. In the bowl of a stand mixer, cream the softened butter and brown sugar together until smooth and fluffy, about 2–3 minutes.

Add the eggs and vanilla extract and mix until fully combined. Scrape down the sides of the bowl.

Add the flour, graham cracker crumbs, baking powder, and salt. Mix on low speed until a soft, slightly sticky dough forms. Scrape down the sides as needed.

Step 2: Press the Base Layer

Press approximately two-thirds of the dough into the bottom of the prepared pan in an even layer. Use your fingertips or the bottom of a measuring cup to get it smooth and even all the way to the edges.

Step 3: Add the Marshmallow and Chocolate Layers

Dollop the marshmallow fluff over the dough and spread it gently. It does not need to be perfectly even — the rustic look is part of the charm, and it will spread further during baking.

Break the Hershey’s chocolate bars into pieces and scatter about two-thirds of them over the marshmallow layer.

Step 4: Top and Bake

Tear the remaining dough into small pieces and scatter them over the chocolate and marshmallow, leaving gaps so the filling peeks through. This is what gives the bars that beautiful, rustic s’more look.

Bake for approximately 30 minutes until the edges are just beginning to turn golden brown. The center will look slightly underdone — that is correct. It will set as it cools.

Remove from the oven and immediately scatter the remaining chocolate pieces over the top. They will melt into place as the bars cool, creating that glossy chocolate finish.

Pro Tips for Perfect S’mores Bars

Do not overbake. The edges should be golden but the center should still look slightly soft when you pull them from the oven. They firm up considerably as they cool, and overbaked bars will be dry and crumbly instead of gooey and chewy.

Cool completely before cutting. I know it is hard. But cutting warm s’mores bars results in a gooey, melty mess (delicious but not presentable). Give them at least an hour at room temperature, or 30 minutes in the refrigerator, before slicing.

Use a sharp knife and wipe between cuts. The marshmallow is sticky. A sharp knife run under hot water and wiped dry between each cut gives you clean, bakery-style slices.

Serving Suggestions

These bars are perfect at room temperature, but warming them for 10–15 seconds in the microwave brings back that fresh-from-the-oven gooeyness. Serve them with a scoop of vanilla ice cream for a truly indulgent dessert. They are also excellent packed in a lunchbox, brought to a cookout, or stacked on a dessert platter at a party.

Storage

Store in an airtight container in the refrigerator for up to 3 days. Bring to room temperature before serving, or warm briefly in the microwave. These bars can also be frozen — wrap individual bars in plastic wrap and store in a freezer bag for up to 2 months. Thaw at room temperature.

More Recipes You Will Love

If you loved these S’mores Bars, you’ll want to try these other crowd-pleasing desserts from Everyday Kitchen Recipes:

🍪 Oreo Pudding Dream Bars — Four layers of no-bake indulgence with Oreo crust, cream cheese, chocolate pudding, and Cool Whip.

🍫 Chocolate Lava Cakes — Individual molten chocolate cakes that are easier than they look and impossibly impressive.

🍋 Lemon Cheesecake Bars with Lemon Curd — Three layers of sunshine in every bite. Perfect for spring entertaining.

If you make these S’mores Bars, I’d love to hear how they turned out! Leave a comment below, give them a star rating, and tag us on Instagram @everydaykitchenrecipes — we love seeing your creations.