Rich chocolate brownies, crunchy graham crackers, melted chocolate, and perfectly toasted marshmallows come together in one irresistible dessert. S’mores Brownies combine everything people love about classic campfire s’mores with the deep, fudgy texture of homemade brownies.

This recipe is simple enough for beginners and perfect for birthdays, bake sales, family gatherings, or weekend baking. Every bite delivers a delicious contrast of crispy, gooey, and soft textures. The recipe uses everyday pantry ingredients, requires no special baking skills, and produces bakery-style results at home.

Anyone looking for an easy chocolate dessert or a crowd-pleasing brownie recipe will quickly fall in love with these S’mores Brownies. Readers who enjoy chocolate treats may also like the Ultimate Fudgy Brownie Recipe, Classic Chocolate Chip Cookies, and Easy Homemade Marshmallow Bars for more sweet inspiration.

For the Graham Cracker Base

9 whole graham crackers (about 140 g)
85 g unsalted butter, melted
2 tablespoons granulated sugar

For the Brownie Batter

170 g unsalted butter
200 g dark chocolate, chopped
200 g granulated sugar
100 g light brown sugar
3 large eggs
2 teaspoons vanilla extract
95 g plain flour
35 g unsweetened cocoa powder
½ teaspoon salt

For the S’mores Topping

150 g milk chocolate, roughly chopped
180 g mini marshmallows
4 whole graham crackers, roughly broken into pieces

Equipment Needed

20 x 20 cm (8-inch) square baking tin
Baking paper
Mixing bowls
Heatproof bowl
Saucepan or microwave
Whisk
Silicone spatula
Measuring cups or kitchen scale
Cooling rack
Sharp knife

Step-by-Step Instructions

1. Prepare the Baking Tin

Preheat the oven to 175°C.

Line the baking tin with baking paper, leaving some overhang for easy lifting.

2. Make the Graham Cracker Base

Crush the graham crackers into coarse crumbs.

Mix with melted butter and sugar until evenly coated.

Press firmly into the base of the prepared tin.

Bake for 8 minutes.

Remove and allow to cool slightly.

3. Melt the Chocolate

Place the butter and chopped dark chocolate into a heatproof bowl.

Melt gently over simmering water or in short microwave bursts.

Stir until completely smooth.

Cool for about 5 minutes.

4. Mix the Wet Ingredients

Whisk together the granulated sugar, brown sugar, eggs, and vanilla until smooth.

Slowly whisk in the melted chocolate mixture.

5. Add the Dry Ingredients

Sift together the flour, cocoa powder, and salt.

Fold gently into the wet mixture using a spatula.

Mix only until no dry flour remains.

6. Assemble

Pour the brownie batter over the baked graham cracker crust.

Spread evenly.

Bake for 28–32 minutes.

The centre should still have a slight wobble when gently shaken.

7. Add the S’mores Topping

Remove the brownies from the oven.

Scatter the chopped milk chocolate evenly across the top.

Add the mini marshmallows.

Finish with broken graham cracker pieces.

8. Toast the Marshmallows

Return the tin to the oven for 5–7 minutes until the marshmallows become golden and puffy.

For deeper colour, place under the grill for 1–2 minutes while watching carefully.

9. Cool Completely

Allow the brownies to cool in the tin for at least one hour.

Lift out using the baking paper.

Slice into squares with a warm knife for neat edges.

Tips & Variations for S’mores Brownies

Use Good Chocolate

High-quality chocolate creates a richer flavour and a smoother brownie texture.

Don’t Overbake

Slightly underbaked brownies stay soft and fudgy after cooling.

Line the Tin Well

Extra baking paper makes lifting and slicing much easier.

Add Chocolate Chips

A handful of chocolate chips creates even more pockets of melted chocolate.

Try Different Chocolate

Milk, dark, or white chocolate all work beautifully.

Make It Extra Crunchy

Sprinkle extra graham cracker crumbs over the marshmallows before the final bake.

Avoid Overmixing

Gentle folding keeps the brownies soft instead of dense.

Cut Clean Slices

Warm the knife under hot water and wipe clean between each cut.

Readers looking for more easy baking ideas can also explore the Easy Chocolate Tray Bake, Chewy Double Chocolate Cookies, and Classic Vanilla Cupcakes for more homemade desserts.

Storage & Serving

Store S’mores Brownies in an airtight container at room temperature for up to 3 days.

For longer freshness, refrigerate for up to 1 week.

Freeze individual brownie squares for up to 3 months. Wrap each piece tightly before freezing.

Thaw overnight in the refrigerator or at room temperature before serving.

For the ultimate dessert, warm a brownie for 10–15 seconds in the microwave.

Serve with:

Vanilla ice cream
Fresh strawberries
Warm chocolate sauce
Hot coffee
Cold milk
Hot chocolate

Frequently Asked Questions

Can S’mores Brownies be made ahead of time?

Yes. They taste even better the next day as the flavours settle.

Why are the brownies still soft in the middle?

A slightly soft centre is normal. They continue setting as they cool.

Can homemade brownies be frozen?

Yes. Wrap each square individually before freezing for the best texture.

Can regular marshmallows be used?

Yes. Cut large marshmallows into smaller pieces before adding them.

What if graham crackers are unavailable?

Digestive biscuits make an excellent substitute.

Why did the marshmallows become hard?

Marshmallows can become firm if baked too long. Add them only during the final few minutes.

Can this recipe be doubled?

Yes. Bake in a larger rectangular pan and increase baking time slightly.

How can brownies stay extra fudgy?

Avoid overbaking and measure the flour accurately.

Can chocolate chunks replace chocolate bars?

Yes. Chocolate chunks melt beautifully throughout the topping.

Are S’mores Brownies suitable for parties?

Absolutely. They travel well, slice neatly, and remain delicious for several days.

Conclusion

S’mores Brownies are the perfect combination of rich chocolate, buttery graham crackers, gooey marshmallows, and melted chocolate in every bite. The recipe is beginner-friendly, easy to prepare, and ideal for celebrations, holidays, or cosy evenings at home. With a crisp base, soft fudgy centre, and beautifully toasted topping, this dessert is guaranteed to impress family and friends. Bake a batch of these delicious S’mores Brownies, enjoy every gooey bite, and share them with loved ones for a dessert everyone will remember.