Pumpkin S'mores Bars Recipe tastes like a gooey campfire s’more collided with a cozy slice of pumpkin pie in the best way possible. It works perfectly for fall parties, bake sales, or weeknight treats and takes about 1 hour total, including baking and cooling just enough to slice. I tested these on my neighbors and they now “accidentally” walk by my house whenever they smell pumpkin spice in the air.

Why Choose This Pumpkin S'mores Bars Recipe

This Pumpkin S'mores Bars Recipe layers a buttery graham cracker crust, spiced pumpkin filling, melty chocolate, and toasted marshmallows in one pan. You get all the classic s’mores flavor with a soft, chewy texture that cuts neatly into bars for easy sharing.

You mix everything in simple bowls, no mixer required, and the ingredients come from basic grocery store brands. The recipe also holds up well at room temperature, so you can pack it for potlucks, school events, or long car rides without worrying about a melty mess.

“These pumpkin s’mores bars disappeared from the dessert table in ten minutes flat and everyone asked for the recipe ★★★★★”

Ingredients You’ll Need

Crust layer

2 cups graham cracker crumbs
- Use regular honey grahams; store brands work great.
- You can swap in cinnamon grahams for extra spice.
8 tablespoons (1 stick) unsalted butter, melted
- Salted butter works too; just reduce added salt slightly.
2 tablespoons brown sugar, packed
1/4 teaspoon fine sea salt

Pumpkin layer

1 cup pumpkin puree
- Use 100% pure pumpkin, not pumpkin pie filling.
- Canned pumpkin from Libby’s or store brand both taste great.
1/2 cup brown sugar, packed
1/4 cup granulated sugar
1 large egg
1 teaspoon vanilla extract
1 teaspoon ground cinnamon
1/4 teaspoon ground nutmeg
1/4 teaspoon ground ginger
1/8 teaspoon ground cloves (optional, for stronger spice)
1/4 teaspoon fine sea salt
3/4 cup all-purpose flour, spooned and leveled

Chocolate & marshmallow topping

1 1/4 cups semi-sweet chocolate chips
- Use milk chocolate chips if you like a sweeter, classic s’mores vibe.
- Dark chocolate chips balance the sweetness nicely.
2 cups mini marshmallows
- Mini marshmallows melt and toast more evenly than large ones.

Optional mix-ins & swaps

1/2 cup chopped pecans or walnuts in the pumpkin layer for crunch
1/4 teaspoon pumpkin pie spice in place of individual spices
Gluten-free graham crackers and a 1:1 gluten-free flour blend if you need a gluten-free version

Equipment list

8×8 inch baking pan (metal pan browns the crust best)
Parchment paper
Mixing bowls (one medium, one large)
Whisk and rubber spatula
Measuring cups and spoons
Small offset spatula or spoon for spreading layers
Knife for slicing bars
Optional: kitchen torch for extra toasty marshmallows

Tips & Tricks

Line the pan with parchment and leave overhang so you lift the whole slab out cleanly.
Press the graham crust firmly with the bottom of a measuring cup so it bakes into a solid base that does not crumble.
Pat the pumpkin layer gently over the crust instead of dragging it, which keeps the crust from tearing.
Use room temperature egg and pumpkin so the batter mixes smoothly and bakes evenly.
Add chocolate chips right after the pumpkin layer bakes so the residual heat softens them slightly before marshmallows go on.
Switch the oven to broil only when you stand right in front of it; marshmallows go from golden to charcoal in seconds.
Chill the baked bars for at least 30 minutes before slicing if you want clean edges.
Wipe the knife with a warm, damp towel between cuts to keep the marshmallow layer neat.

How to Make Pumpkin S'mores Bars Recipe

Step 1: Prep the pan and oven

Preheat your oven to 350°F. Line an 8×8 inch pan with parchment paper, leaving some overhang on two sides like handles. Lightly grease the parchment so the crust and marshmallows release easily.

Step 2: Mix and bake the graham crust

In a medium bowl, stir together graham cracker crumbs, brown sugar, and salt. Pour in the melted butter and mix until the crumbs feel like damp sand and hold together when you squeeze them. Press the mixture firmly into the bottom of the pan in an even layer.

Bake the crust for 8 to 10 minutes until it looks slightly darker and smells toasty. Set the pan on a cooling rack while you mix the pumpkin layer. The crust should still feel warm when you add the pumpkin mixture.

Step 3: Make the pumpkin batter

In a large bowl, whisk pumpkin puree, brown sugar, granulated sugar, egg, and vanilla until smooth and glossy. Add cinnamon, nutmeg, ginger, cloves if using, and salt, then whisk again so the spices distribute evenly. Sprinkle the flour over the top and fold it in gently with a spatula until no dry streaks remain.

If you add nuts or extra chocolate chips to the pumpkin layer, fold them in now. The batter should feel thick but spreadable, similar to brownie batter. Scrape the bowl so you use every bit of that pumpkin goodness.

Step 4: Spread pumpkin over the crust

Drop the pumpkin batter in several spoonfuls over the warm crust. Use a spatula to gently connect the dollops, then smooth the top. Avoid pushing too hard so the crust stays in place and does not mix into the pumpkin layer.

Bake for 18 to 22 minutes, until the edges look set and the center no longer jiggles when you nudge the pan. A toothpick inserted near the center should come out with a few moist crumbs, not wet batter. Leave the oven on.

Step 5: Add chocolate and marshmallows

Sprinkle chocolate chips evenly over the hot pumpkin layer. Let them sit for 2 to 3 minutes so they soften slightly from the heat. Scatter mini marshmallows on top in a single, mostly even layer, covering the pumpkin and chocolate.

Step 6: Toast the marshmallows

Return the pan to the oven and bake at 350°F for 5 to 7 minutes until the marshmallows puff and start to turn golden. If you want a deeper toast, switch the oven to broil on high and watch closely for 30 to 90 seconds. Pull the pan out as soon as the tops look golden brown with a few darker spots.

If you own a kitchen torch, you can skip the broiler and toast the marshmallows directly in the pan. Move the flame constantly so you do not scorch one spot. The goal is a campfire look, not a burnt offering.

Step 7: Cool and slice

Place the pan on a cooling rack and let the bars cool at least 30 to 45 minutes. The marshmallows will set slightly, which helps the knife glide through. Use the parchment overhang to lift the slab out of the pan, then cut into 9 large or 16 smaller bars.

If the knife sticks, run it under warm water, dry it, then slice again. Serve the bars slightly warm for extra gooey texture or at room temperature for cleaner layers.

What to Serve with it?

Pumpkin S'mores Bars taste amazing with a cold glass of milk or a mug of hot chocolate. Kids love them with apple cider, either chilled or warmed with a cinnamon stick. You can also pair a small bar with a scoop of vanilla or cinnamon ice cream for a more decadent dessert plate. For a fall dessert board, add sliced apples, grapes, and a bowl of pretzels to balance the sweetness.

Storage Options

Store leftover bars in an airtight container at room temperature for up to 2 days; keep layers from sticking by placing parchment between stacked pieces.
Keep them in the fridge for 4 to 5 days if you want a firmer texture and easier slicing.
Freeze individual bars on a baking sheet until solid, then transfer to a freezer bag for up to 2 months.
Reheat chilled or frozen bars in a 300°F oven or toaster oven for 5 to 8 minutes until the chocolate softens and the marshmallows feel slightly gooey again.