S’mores Dessert Bars bring the campfire favorite indoors with no mess and no skewers. They’re soft, gooey, and packed with that classic trio: graham crackers, chocolate, and toasted marshmallow. These bars are easy enough for a weeknight sweet and impressive enough for a party platter.
You get all the nostalgic flavor with a buttery crust and melty layers that slice cleanly. If you love simple desserts that hit every craving, this one delivers.
S’mores Dessert Bars - Gooey, Chocolatey, Crowd-Pleasing Treat
Ingredients
- Graham cracker crumbs (about 2 cups; from 16–18 full sheets)
- Unsalted butter (10 tablespoons), melted
- Granulated sugar (1/4 cup)
- Fine sea salt (1/2 teaspoon), divided
- All-purpose flour (1/2 cup)
- Baking powder (1/2 teaspoon)
- Brown sugar (1/2 cup, packed)
- Large egg (1)
- Vanilla extract (2 teaspoons)
- Milk chocolate bars (10–12 ounces), broken into pieces
- Semi-sweet chocolate chips or chunks (1 cup)
- Mini marshmallows (4–5 cups)
- Optional: flaky sea salt (for finishing)
- Optional mix-ins: peanut butter chips, crushed pretzels, or chopped toasted nuts
Instructions
- Prep the pan: Heat oven to 350°F (175°C). Line a 9x13-inch baking pan with parchment, leaving overhang on the long sides for easy lifting. Lightly grease the parchment.
- Make the crust: In a bowl, mix graham crumbs, granulated sugar, 1/4 teaspoon salt, and melted butter until it resembles damp sand.Press firmly and evenly into the prepared pan using the bottom of a measuring cup.
- Par-bake: Bake the crust for 8–10 minutes until set and lightly fragrant. Remove and cool for 5 minutes while you make the topping.
- Mix the cookie layer: In a separate bowl, whisk flour, baking powder, and remaining 1/4 teaspoon salt. In another bowl, beat brown sugar, egg, and vanilla until smooth.Stir dry ingredients into wet to form a soft dough.
- Assemble the chocolate layer: Arrange milk chocolate pieces evenly over the warm crust. Sprinkle semi-sweet chips in any gaps for full coverage.
- Add cookie dollops: Drop small spoonfuls of the dough over the chocolate. Don’t worry about perfect coverage—little pockets of chocolate peeking through are ideal.
- First bake: Return the pan to the oven and bake 12–15 minutes, until the cookie patches are puffed and just set at the edges.The chocolate will be melty underneath.
- Top with marshmallows: Remove the pan and scatter mini marshmallows in a thick, even layer. Gently press to help them stick.
- Final toast: Switch the oven to broil. Broil the bars on the middle rack for 1–2 minutes, watching constantly, until the marshmallows are golden-brown with a few darker spots.Rotate the pan as needed for even color.
- Cool and set: Let the bars cool at room temperature for 30–45 minutes, then transfer the pan to the fridge for 30 minutes to firm up the chocolate for cleaner slicing.
- Slice and serve: Use the parchment overhang to lift the slab out. Grease a sharp knife and cut into squares or bars. Sprinkle with flaky sea salt if you like a sweet-salty finish.
What Makes This Recipe So Good
These bars take the best parts of a s’more and make them shareable. You still get the crisp graham flavor, the smooth chocolate, and the toasty marshmallow finish.
But the layers hold together, so you can stack them on a dessert table or pack them for a picnic.
- Foolproof crust: A buttery graham base that bakes up sturdy but tender.
- Maximum chocolate: Two kinds of chocolate for depth and meltiness.
- Golden marshmallow top: Broiled just enough for that campfire look and flavor.
- No campfire required: Easy to make in a standard baking pan.
- Great warm or chilled: They’re delicious straight from the pan or set and sliceable the next day.
Keeping It Fresh
These bars keep well at room temperature for 2–3 days in an airtight container.
If your kitchen is warm, refrigerate them to keep the chocolate from getting too soft. For longer storage, freeze cut bars on a sheet until solid, then transfer to a freezer bag for up to 2 months.
To serve from frozen, thaw at room temperature for 20–30 minutes. If you want that just-made gooey vibe, warm an individual bar in the microwave for 8–10 seconds.
Why This is Good for You
S’mores Dessert Bars are an indulgence, but there are a few upsides.
Chocolate brings antioxidants, and a homemade treat can curb a bigger sweet craving with a satisfying square. Portion control is simple because the bars slice cleanly.
You also control ingredients. Use high-quality chocolate, adjust the sugar, or swap some of the all-purpose flour for whole wheat pastry flour.
Little tweaks can make a difference without losing the fun.
Pitfalls to Watch Out For
- Scorched marshmallows: Broilers vary. Stay close and watch the color; it goes from golden to burnt in seconds.
- Crumbly crust: If your crust falls apart, it likely needed more butter or firmer packing. Press hard and bake until set.
- Messy slicing: Warm chocolate smears.Chill briefly before cutting, and grease the knife for clean edges.
- Dry cookie layer: Overbaking before adding marshmallows can dry the dough. Pull it as soon as it’s set at the edges.
- Uneven layers: Spread chocolate to the edges and scatter dough evenly so each bite hits all three elements.
Alternatives
- Gluten-free: Use certified gluten-free graham crackers and a 1:1 gluten-free flour blend for the dough.
- Dairy-free: Swap in plant-based butter and dairy-free chocolate. Many marshmallows are dairy-free, but check labels.
- Dark and salty: Replace milk chocolate with 70% dark and finish with flaky sea salt for a grown-up twist.
- Peanut butter swirl: Dollop warm peanut butter over the chocolate layer before baking for a sweet-salty combo.
- Cookie butter or caramel: Drizzle cookie butter or thick caramel over the chocolate, then proceed with marshmallows.
- Mini skillet version: Halve the recipe and bake in an 8-inch skillet for a cozy dessert served warm with spoons.
FAQ
Can I use regular marshmallows instead of mini?
Yes.
Cut large marshmallows in half and place them cut-side down so they stick. Minis melt and brown more evenly, but large ones work in a pinch.
Do I have to broil the marshmallows?
No, you can bake for 5–7 minutes at 350°F until puffed. Broiling gives that classic toasted flavor, but baking is more forgiving and still tasty.
What chocolate is best?
Use what you love.
Milk chocolate captures classic s’mores flavor, while semi-sweet or dark adds balance. A mix of bars and chips covers the crust well and melts beautifully.
How do I prevent the crust from sticking?
Line the pan with parchment and leave enough overhang to lift the bars out. Lightly grease the parchment, especially the corners, for easy release.
Can I make these ahead?
Absolutely.
Bake, cool, and chill, then slice. They keep for a couple of days and actually cut cleaner on day two. Warm briefly if you prefer extra gooey.
How many bars does this make?
In a 9×13-inch pan, you’ll get about 20–24 small squares or 12–16 larger bars, depending on how you slice them.
Can I reduce the sugar?
Yes.
You can cut the granulated sugar in the crust to 2 tablespoons and the brown sugar in the dough to 1/3 cup. The chocolate and marshmallows still keep things sweet.
What if I don’t have graham crackers?
Use crushed digestive biscuits, vanilla wafers, or a mix of pretzels and cookies. Aim for a fine crumb and adjust butter until the mixture holds when pressed.
How do I know when to pull them from the broiler?
Look for a uniform golden top with a few deeper brown spots.
The marshmallows should be glossy and soft, not blackened. Rotate the pan for even color.
Can kids help with this recipe?
Yes, with supervision. Kids can crush crackers, press the crust, place chocolate, and scatter marshmallows.
Adults should handle the hot oven and broiler step.
Wrapping Up
S’mores Dessert Bars pack everything you love about campfire s’mores into an easy, shareable pan. The buttery crust, melty chocolate, and toasty marshmallows make a crowd-pleaser that never lasts long. Keep the ingredients on hand, and you’ll always have a quick dessert ready for family nights, bake sales, or last-minute gatherings.
Simple to make, fun to eat, and nostalgia baked into every bite—that’s a win.
