The Brownie S’mores Cupcake combines three delicious layers into one irresistible treat. A fudgy brownie cupcake is crowned with a perfectly roasted marshmallow and finished with a melting chocolate square—best enjoyed warm from the oven.
When you can’t choose between brownies and s’mores, this Brownie S’mores Cupcake delivers both. The base is a dense, fudgy brownie baked in a muffin tin to create an individual cupcake shape. A large marshmallow is toasted on top, and a chocolate square is pressed into the warm marshmallow so it melts slightly and creates a gooey, chocolatey finish.
This is an easy recipe designed for busy cooks and for families. Using a boxed brownie mix keeps the method quick and accessible, while still producing rich, indulgent results. It’s a great option for teenagers and novice bakers because the steps are simple and the payoff is impressive.
Step 1. Make the fudgy brownie base
Prepare one standard box of brownie mix following the package directions, adapting only the pan and baking time. Instead of pouring batter into a flat baking pan, scoop about three-quarters of the batter into lined muffin cups. Baking in a muffin tin concentrates the batter and produces thick, fudgy cupcakes. Bake slightly less time than the box suggests so the centers stay moist and slightly underbaked compared to a full sheet brownie—this helps keep the texture soft after you broil the marshmallows.
Step 2. Roast the marshmallows
As soon as the brownie cupcakes come out of the oven, switch the oven to broil. Place one large marshmallow on top of each brownie cupcake and return the tray to the oven on the top rack. Broil for up to two minutes, watching closely, until the marshmallows are golden and evenly roasted. Keep the oven door slightly ajar if needed and be ready to remove the pan the instant the marshmallows reach your preferred color—broilers vary in intensity.
Remove the tray and let the cupcakes rest briefly on a cooling rack so the marshmallows settle and remain pillowy rather than collapsing completely.
Step 3. Add the chocolate
Top each roasted marshmallow with a square of chocolate while the marshmallow is still hot. Gently press the chocolate into the marshmallow so it softens and begins to melt, creating a glossy, luscious finish. Use any type of chocolate you prefer—milk, dark, or chocolate with inclusions like nuts or caramel—to customize the flavor.
Allow each Brownie S’mores Cupcake to rest for 3–5 minutes so the chocolate softens but the cupcakes are still warm. Serve immediately for the best gooey texture and contrast of fudgy brownie, toasted marshmallow, and melted chocolate.
If you try this recipe, please leave feedback or a rating below. Comments from readers help refine tips and timing, especially for adjustments like oven variations or different brownie mixes.
Brownie S’mores Cupcake
Equipment
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Muffin pan (12-cup) and paper liners or a nonstick spray
Ingredients
- 1 box brownie mix (plus required oil, eggs, water)
- 12 large marshmallows
- 12 squares chocolate (your choice: milk, dark, or flavored)
Instructions
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Preheat oven and prepare brownie batter according to the box directions. Line a 12-cup muffin pan with liners or grease the cups. Fill each cup about three-quarters full with batter.
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Bake the brownie cupcakes for a few minutes less than the time listed for a full pan so they remain fudgy. Times will vary by oven and mix; test by inserting a toothpick near the center—some moist crumbs are fine.
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Immediately switch the oven to broil. Place one large marshmallow on top of each brownie cupcake and return the pan to the oven on the top rack. Broil for up to two minutes, watching carefully, until the marshmallows are golden and puffed.
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Remove the pan and set it on a cooling rack. While the marshmallows are still warm, press a chocolate square into the center of each one and hold gently for a few seconds to encourage melting. Let rest 3–5 minutes and serve warm.
Nutrition information is provided as an estimate only and will vary depending on the brownie mix and chocolate used.
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It’s easy to scale and customize with different chocolates and brownie mixes.