Best S’mores Brownies Recipe – Easy Gooey Chocolate Marshmallow Graham Cracker Dessert

These s’mores brownies are soft, rich, and full of chocolate flavor. Each bite has a crunchy graham cracker base, a fudgy brownie center, and a gooey marshmallow top. It is a simple dessert that feels extra special.

This recipe is perfect when you want an easy brownie dessert that looks and tastes amazing. It is great for family gatherings, parties, or a cozy dessert at home. The mix of textures makes it one of the best chocolate marshmallow desserts to try.

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Why You Will Love This S’mores Brownies Recipe

• Easy to make with simple pantry ingredients
• Combines three layers in one dessert
• Rich and fudgy brownie texture
• Gooey and lightly toasted marshmallow topping
• Crunchy graham cracker crust adds balance
• Perfect for parties, potlucks, and holidays
• Great make-ahead dessert option
• A fun twist on classic campfire s’mores dessert

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Ingredients for S’mores Brownies

• 1 ½ cups graham cracker crumbs
• ½ cup unsalted butter, melted
• ¼ cup sugar
• 1 box brownie mix (plus eggs, oil, and water as listed on box)
• 2 cups mini marshmallows
• 1 cup chocolate chips

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Ingredient Notes and Substitutions

• Graham cracker crumbs
  • You can crush whole graham crackers using a rolling pin
  • Digestive biscuits work well as a substitute
• Butter
  • Melted butter helps bind the crust together
  • Margarine can be used, but butter gives better flavor
• Brownie mix
  • Any standard mix works well
  • You can use homemade brownie batter if preferred
• Marshmallows
  • Mini marshmallows melt faster and more evenly
  • Large marshmallows can be cut into smaller pieces
• Chocolate chips
  • Use milk, dark, or semi-sweet chocolate
  • Chocolate chunks can be used for a more rustic look

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Step-by-Step Instructions for S’mores Brownies

Step 1: Prepare the Baking Pan and Oven

Preheat the oven to 175°C. Line a square baking pan with parchment paper, leaving extra paper on the sides so it is easy to lift the brownies out later. Lightly grease the paper to prevent sticking.

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Step 2: Make the Graham Cracker Crust

In a mixing bowl, combine graham cracker crumbs, melted butter, and sugar. Stir well until all the crumbs are evenly coated. The mixture should look like damp sand and hold together when pressed.

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Step 3: Press the Crust into the Pan

Transfer the crumb mixture into the prepared pan. Use the back of a spoon or your hands to press it down firmly into an even layer. Make sure to press into the corners so the crust holds together while baking.

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Step 4: Pre-Bake the Crust

Place the crust in the oven and bake for 8 to 10 minutes. This step helps the crust set and keeps it from becoming soggy when the brownie layer is added. Remove from the oven and let it cool slightly.

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Step 5: Prepare the Brownie Batter

In a separate bowl, prepare the brownie mix according to the package instructions. Mix until smooth and fully combined. Avoid overmixing, as this can make the brownies less soft.

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Step 6: Add the Brownie Layer

Pour the prepared brownie batter over the slightly cooled crust. Use a spatula to spread it evenly across the pan. Make sure the batter reaches all corners for an even bake.

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Step 7: Bake the Brownies

Place the pan in the oven and bake according to the brownie mix instructions, usually 25 to 30 minutes. The center should be set but still slightly soft. A toothpick inserted should come out with a few moist crumbs.

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Step 8: Add the S’mores Topping

Remove the brownies from the oven. Immediately sprinkle mini marshmallows evenly over the top, followed by chocolate chips. Do not press them down too much, as they will melt in the oven.

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Step 9: Bake Again Until Gooey

Return the pan to the oven and bake for another 5 to 7 minutes. The marshmallows will puff up and turn lightly golden. The chocolate chips will soften and become slightly melted.

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Step 10: Cool and Slice the Brownies

Remove the pan from the oven and allow the brownies to cool completely. This step is important for clean slices. Once cooled, lift the brownies out using the parchment paper and cut into squares.

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Tips for the Best S’mores Brownies

• Press the crust firmly so it does not crumble
• Do not skip pre-baking the crust
• Avoid overbaking to keep brownies soft and fudgy
• Let brownies cool fully before cutting
• Use parchment paper for easy removal
• Lightly toast marshmallows for extra flavor
• Use a sharp knife and wipe between cuts for clean slices

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Variations and Add-Ins

• Add peanut butter chips for extra flavor
• Mix crushed cookies into the brownie batter
• Drizzle caramel sauce over the top before serving
• Use dark chocolate for a richer taste
• Add chopped nuts like walnuts or almonds
• Sprinkle sea salt on top for a sweet and salty balance

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What to Serve With S’mores Brownies

• Vanilla ice cream
• Cold milk
• Hot chocolate
• Coffee or iced coffee
• Fresh berries
• Whipped cream

These s’mores brownies bring together everything you love in one easy dessert. The crunchy base, soft brownie center, and gooey topping make every bite rich and satisfying.

It is a simple recipe, but the flavor feels big and fun. Perfect for sharing, or just keeping a few extra pieces for later.