Marshmallow Brownies
Marshmallow Brownies are soft, chewy chocolate brownies with a fluffy, sweet layer of melted marshmallows on top. Imagine biting into a rich chocolate cake that is fudgy on the inside, and then getting a gooey, stretchy marshmallow surprise in every bite. That’s exactly what Marshmallow Brownies taste like! They are a fun twist on classic brownies and are perfect for birthday parties, family movie nights, school bake sales, or just when you want something sweet and comforting.

These brownies are easy enough for beginners to make, even kids (with adult supervision). The marshmallows melt in the oven and create a soft, creamy topping that pairs perfectly with the deep chocolate flavor. Some people even add chocolate chips, nuts, or a drizzle of chocolate sauce on top to make them extra special. If you love chocolate and marshmallows, this dessert will quickly become one of your favorites.
You Should Try the Marshmallow Brownies
You should try Marshmallow Brownies because they are simple, delicious, and super fun to make. They don’t require fancy ingredients or complicated steps. Most of the items you need are probably already in your kitchen. Plus, watching the marshmallows puff up and melt in the oven is exciting!
Another reason to make this recipe is that it’s perfect for sharing with others. You can slice the brownies into tidy squares and serve them to friends and family for any occasion. When stored in an airtight container, they stay soft, moist, and delicious for several days.You can also personalize them with your favorite toppings like chocolate chips, chopped nuts, caramel drizzle, or a light dusting of powdered sugar. It’s a simple, flexible recipe that encourages creativity while still being easy to follow from start to finish.
Table of Contents
Ingredients for Marshmallow Brownies
Here’s everything you’ll need to Marshmallow Brownies:
- 1/2 cup (1 stick) unsalted butter
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 1/3 cup unsweetened cocoa powder
- 1/2 cup all-purpose flour
- 1/4 teaspoon salt
- 1/4 teaspoon baking powder
- 2 cups mini marshmallows or large marshmallows cut into smaller pieces
- Optional: 1/2 cup chocolate chips or chopped nuts
How to Make Marshmallow Brownies
Step One
Begin by preheating your oven to 350°F (175°C) so it reaches the perfect temperature for even baking, and while it heats up, prepare an 8×8-inch baking pan by greasing it lightly with butter or lining it with parchment paper to ensure the brownies come out easily without sticking.
Step Two
Next, melt the butter in a microwave-safe bowl, checking it every 20–30 seconds to prevent overheating, and once fully melted, allow it to cool slightly before mixing it with the sugar, eggs, and vanilla extract, stirring until the mixture becomes smooth, shiny, and well-combined.
Step Three
In a separate bowl, combine the cocoa powder, flour, salt, and baking powder, then gradually fold the dry ingredients into the wet mixture, stirring gently just until no streaks of flour remain to avoid overmixing and making the brownies tough, and if you like, fold in chocolate chips or nuts for extra texture and flavor.
Step Four
Pour the batter evenly into the prepared pan, smoothing the top with a spatula to create a level surface, and place the pan carefully into the preheated oven, baking for about 20–25 minutes until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs.

Step Five
Remove the pan from the oven and immediately sprinkle the mini marshmallows evenly over the top, returning the pan to the oven for an additional 5 minutes or until the marshmallows puff up and develop a light golden color, creating that signature gooey topping.
Step Six
Finally, transfer the pan to a cooling rack and allow the brownies to cool completely for at least 30–45 minutes so they firm up, and once cooled, use a sharp knife to cut them into squares, making sure each piece has some of the melted marshmallow on top for the perfect bite every time.
Kitchen Equipment Needed :
To make this Recipe, you’ll need:
- Mixing bowl
- Wooden spoon or spatula
- Measuring cups and spoons
- 8×8-inch baking pan
- Parchment paper optional but helpful
- Whisk or fork
- Oven mitts
- Cooling rack
- Knife for cutting
Serving Suggestion
I like making these marshmallow brownies when I want a dessert that feels fun and a little extra indulgent. They’re perfect for family movie nights or relaxed weekends, and my daughter loves the soft marshmallow layer melted over the rich chocolate base. I usually cut them into squares and serve them with a glass of cold milk, a simple milkshake, or even a fresh fruit smoothie for something lighter. Gooey, chocolatey, and easy to share, these brownies never last long in our kitchen.

Frequently Asked Questions
Can I add chocolate chips or nuts ?
Yes, adding chocolate chips or chopped nuts is a great way to enhance flavor and texture fold them into the batter before baking.
Can I freeze Marshmallow Brownies ?
Yes, wrap them tightly in plastic wrap or foil and place them in a freezer-safe bag. They can last up to 3 months frozen
Why are my brownies too dense ?
Dense brownies usually result from overmixing the batter or using too much flour. Stir gently and measure ingredients carefully.
Can I decorate the top of the brownies ?
Yes, after baking and cooling, you can drizzle chocolate, sprinkle crushed cookies, or even add colorful sprinkles.
Marshmallow Brownies
Course: Dessert, SnacksCuisine: AmericanDifficulty: Easy12
servings15
minutes30
minutes300
kcal45
minutesSoft, fudgy chocolate brownies topped with gooey, melted marshmallows. Perfect for kids, parties, or a sweet treat anytime!
Ingredients
1/2 cup (1 stick) unsalted butter
1 cup granulated sugar
2 large eggs
1 teaspoon vanilla extract
1/3 cup unsweetened cocoa powder
1/2 cup all-purpose flour
1/4 teaspoon salt
1/4 teaspoon baking powder
2 cups mini marshmallows or large marshmallows cut into smaller pieces
Optional: 1/2 cup chocolate chips or chopped nuts
Directions
- Begin by preheating your oven to 350°F (175°C) so it reaches the perfect temperature for even baking, and while it heats up, prepare an 8x8-inch baking pan by greasing it lightly with butter or lining it with parchment paper to ensure the brownies come out easily without sticking.
- Next, melt the butter in a microwave-safe bowl, checking it every 20–30 seconds to prevent overheating, and once fully melted, allow it to cool slightly before mixing it with the sugar, eggs, and vanilla extract, stirring until the mixture becomes smooth, shiny, and well-combined.
- In a separate bowl, combine the cocoa powder, flour, salt, and baking powder, then gradually fold the dry ingredients into the wet mixture, stirring gently just until no streaks of flour remain to avoid overmixing and making the brownies tough, and if you like, fold in chocolate chips or nuts for extra texture and flavor.
- Pour the batter evenly into the prepared pan, smoothing the top with a spatula to create a level surface, and place the pan carefully into the preheated oven, baking for about 20–25 minutes until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs.
- Remove the pan from the oven and immediately sprinkle the mini marshmallows evenly over the top, returning the pan to the oven for an additional 5 minutes or until the marshmallows puff up and develop a light golden color, creating that signature gooey topping.
- Finally, transfer the pan to a cooling rack and allow the brownies to cool completely for at least 30–45 minutes so they firm up, and once cooled, use a sharp knife to cut them into squares, making sure each piece has some of the melted marshmallow on top for the perfect bite every time.
Notes
- Use fresh eggs for the best flavor and texture.
- Spread batter evenly in the pan for uniform brownies.
- Add chocolate chips or nuts for extra texture and flavor.
- For extra gooey brownies, slightly underbake them by a minute or two.
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