The best s’mores brownies you’ll ever bake (with one clever upgrade)

S’mores brownies perfected with one brilliant twist

Imagine rich, fudgy chocolate brownies topped with melty marshmallows, crunchy graham cracker shards, and gooey chocolate, plus one genius twist that takes them to legendary status.

Perfect for weekend baking, after-dinner treats, or impressing friends, these s’mores brownies are indulgent, fun, and totally worth every bite. Warning: one pan may not be enough.

Ingredients for the brownie base

• 1 cup unsalted butter (melted).
• 2 cups granulated sugar.
• 4 large eggs.
• 1 tsp vanilla extract.
• 1 cup all-purpose flour.
• 3/4 cup unsweetened cocoa powder.
• 1/2 tsp salt.
• 1 cup semi-sweet chocolate chips.

These form the foundation: rich, fudgy brownies that stay soft while holding all the s’mores toppings perfectly.

Ingredients for S’mores topping

• 1 1/2 cups mini marshmallows.
• 1 cup graham cracker crumbs (slightly crushed).
• 1/2 cup milk chocolate chunks.
• Optional: sea salt for sprinkling.

And here’s the clever upgrade: a layer of peanut butter swirl between the brownie and s’mores topping, creamy, nutty, irresistible, and rich enough to make every bite taste like pure dessert heaven.

Preheat and prep pan

Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, letting excess hang over the edges for easy removal. Lightly grease with butter or non-stick spray.

A properly prepared pan ensures your gooey brownies lift out effortlessly and slice neatly. Skipping this step could mean sticking or messy edges, so take a moment; it makes your final presentation as irresistible as the flavor inside.

Mix the brownie batter

In a large bowl, combine melted butter and sugar until smooth and glossy. Add eggs one at a time, whisking thoroughly to incorporate fully. Stir in vanilla extract for extra warmth.

By this stage, the batter shines and smells heavenly. The texture is thick, decadent, and indulgent, hinting at the rich chocolate experience to come. Resist tasting too much yet, patience leads to perfect gooeyness.

Add dry ingredients

Sift together flour, cocoa powder, and a pinch of salt. Gradually fold the dry mixture into the wet batter until just combined. Stir in chocolate chips for gooey pockets of melted chocolate.

Avoid overmixing; this preserves a tender, fudgy texture rather than a cakey one. The batter should be thick, shiny, and irresistible. At this point, you’re only a few steps away from the ultimate s’mores brownie indulgence.

Pour into pan

Pour the prepared batter evenly into your prepped baking pan. Use a spatula to smooth the top so it bakes evenly. This step sets the foundation for perfectly uniform brownies. Resist the urge to taste-test excessively, though tempting, it affects your fudgy texture.

A smooth, evenly spread batter ensures even rising, consistent baking, and perfectly square slices. This small step has a big impact on both appearance and final texture.

Add peanut butter swirl (the upgrade)

Warm ½ cup of peanut butter in the microwave for 15–20 seconds until soft but not runny. Drop spoonfuls over the brownie batter and use a knife or skewer to gently swirl it through the top. The swirl creates creamy pockets that enhance every bite.

This upgrade transforms simple s’mores brownies into a next-level treat with richness, depth, and irresistible visual appeal, making each square a decadent masterpiece worth savoring.

Add s’mores toppings

Sprinkle mini marshmallows evenly over the swirled brownie batter. Scatter chocolate chunks for gooey pockets that melt into every bite. Finish with crushed graham cracker crumbs for texture and crunch.

A light pinch of sea salt is optional but heightens the chocolate-peanut butter contrast. These toppings create the classic s’mores flavor in one tray, making the brownies irresistible. Visual appeal and flavor are perfectly balanced for that ultimate indulgent treat.

Bake the brownies

Bake at 350°F (175°C) for 30–35 minutes. Check doneness with a toothpick, it should come out with a few fudgy crumbs, not wet batter. Watch carefully in the last five minutes to prevent marshmallows from browning too much.

Baking transforms the batter into molten, fudgy perfection with gooey pockets of chocolate and peanut butter. Timing is key: slightly underbaked edges mean chewy, melt-in-your-mouth brownies that everyone will fight over.

Cool slightly

Remove the brownies from the oven and let them cool in the pan for 10–15 minutes. This brief cooling sets the toppings just enough for slicing while keeping gooey marshmallows and peanut butter swirl soft and melty.

Cooling slightly also allows flavors to meld. Resist the temptation to dig in immediately, waiting ensures cleaner slices, maintains structure, and enhances the decadent, chewy texture that makes these s’mores brownies unforgettable.

Slice and serve

Lift brownies from the pan using the parchment overhang. Cut into neat squares with a sharp knife, wiping it between slices for perfect edges. Serve warm for gooey, melty perfection, or at room temperature for firmer, fudgy texture.

Top with a scoop of ice cream for a decadent twist. Each square delivers rich chocolate, gooey marshmallow, and creamy peanut butter in perfect harmony. But if you’re vegan, check out why gluten-free brownies are worth every bite.

Storage tips

Store leftover brownies in an airtight container at room temperature for up to three days. For longer preservation, freeze individual squares for up to two months. Reheat briefly in the microwave to revive gooey marshmallows and soft peanut butter swirl.

Slightly warmed, the chocolate and marshmallows taste even more magical. These brownies stay delicious over time, letting you enjoy the same decadent, rich, and indulgent flavor as other chocolate fusion brownies from around the world.

If you could invent one more topping for these s’mores brownies, what would it be? Tell us in the comments.

Read more from this brand:

• The real reason most chocolate isn’t truly chocolate anymore
• Cakes made with oat flour instead of all purpose
• These brownie-filled mooncakes are the sweetest fusion ever

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This slideshow was made with AI assistance and human editing.