These marshmallow brownies are a delightful treat that combines the rich flavor of fudgy chocolate brownies with creamy marshmallow fluff swirled on top. Perfect for any occasion, they offer a unique twist on traditional brownies, making them a hit at parties, potlucks, or family gatherings. The combination of chocolate chips and marshmallow creates an irresistible dessert that will satisfy any sweet tooth.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Brownie Base
- For the Marshmallow Topping
- How to Make Marshmallow Brownies
- Step 1: Preheat the Oven
- Step 2: Prepare Dry Ingredients
- Step 3: Mix Sugar and Eggs
- Step 4: Combine Wet Ingredients
- Step 5: Incorporate Dry Ingredients
- Step 6: Add Marshmallow Fluff
- Step 7: Bake
- Step 8: Cool and Serve
- How to Serve Marshmallow Brownies
- With Ice Cream
- Drizzled with Sauce
- Topped with Whipped Cream
- As Part of a Dessert Platter
- How to Perfect Marshmallow Brownies
- Best Side Dishes for Marshmallow Brownies
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Marshmallow Brownies
- Reheating Marshmallow Brownies
- Frequently Asked Questions
- Can I use different types of chocolate chips in Marshmallow Brownies?
- How do I make my Marshmallow Brownies extra fudgy?
- Can I add nuts to my Marshmallow Brownies?
- What is the best way to cut Marshmallow Brownies?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Irresistible Flavor: The combination of chocolate and marshmallow creates a sweet and decadent experience.
- Easy to Make: With simple ingredients and straightforward steps, you can whip these up in no time.
- Perfect for Sharing: Cut into squares, these brownies are ideal for parties or gatherings.
- Fudgy Texture: Each bite melts in your mouth, offering a rich and satisfying dessert.
- Versatile Topping Options: Feel free to add nuts or extra chocolate chips for added texture.
Tools and Preparation
Before diving into this delicious recipe, gather your tools. Having everything prepared will make the process smooth and enjoyable.
Essential Tools and Equipment
- Stand mixer or hand mixer
- 9×9-inch baking pan
- Parchment paper
- Mixing bowls
- Rubber spatula
Importance of Each Tool
- Stand mixer or hand mixer: Helps achieve a light and airy batter by thoroughly mixing the ingredients.
- Baking pan: A sturdy pan ensures even baking for perfectly cooked brownies.
- Parchment paper: Prevents sticking and makes it easy to remove the brownies from the pan once baked.
Ingredients
These marshmallow brownies are super fudgy chocolate brownie with chocolate chips. It has marshmallow fluff swirled on top.
For the Brownie Base
- 2 cups White granulated sugar
- 3 Large eggs
- 1 Egg yolk
- 1/2 cup Unsalted butter (melted)
- 2 tsp Pure vanilla extract
- 1/2 cup Oil (canola or vegetable)
- 3/4 cup All-purpose flour
- 1 cup Unsweetened cocoa powder (Use Dutch-process cocoa powder)
- 1 1/2 TBSP Cornstarch
- 1/2 tsp Salt
- 1 cup Semi-sweet chocolate chips
For the Marshmallow Topping
- 1 cup Marshmallow crème
How to Make Marshmallow Brownies
Step 1: Preheat the Oven
Preheat your oven to 325°F. Prepare a 9×9-inch baking pan by spraying it with nonstick spray. Line the bottom and two sides of the pan with parchment paper and spray again for easy removal.
Step 2: Prepare Dry Ingredients
In a medium bowl, sift together the following:
All-purpose flour
Cocoa powder
Cornstarch
Add in the salt and set aside.
Step 3: Mix Sugar and Eggs
Using a stand mixer with a whisk attachment, beat together:
1. Sugar
2. Large eggs
3. Egg yolk
Mix on high speed for about 5 minutes until it becomes pale in color. While mixing, melt the butter in the microwave and allow it to cool slightly.
Step 4: Combine Wet Ingredients
Add to the egg mixture:
Oil
Melted butter
Vanilla extract
Mix on low until combined.
Step 5: Incorporate Dry Ingredients
Gradually add in the dry ingredients you prepared earlier. Mix on low speed until just combined. Then fold in:
Semi-sweet chocolate chips
Step 6: Add Marshmallow Fluff
Pour the brownie batter into your prepared baking pan. Melt the marshmallow fluff in the microwave for about 20-30 seconds until soft. Use a teaspoon to dollop the melted fluff on top of the brownie batter. Lightly swirl using a butter knife to create a marbled effect.
Step 7: Bake
Bake your brownies in the preheated oven for about 45-55 minutes. Check for doneness by inserting a toothpick; it should come out slightly wet but not covered in batter. If needed, bake for an additional 5 minutes.
Step 8: Cool and Serve
Let your brownies cool completely on a cooling rack before cutting them into squares and serving them up! Enjoy every fudgy bite of these delightful marshmallow brownies!
How to Serve Marshmallow Brownies
Serving marshmallow brownies is all about highlighting their rich, fudgy texture and sweet flavor. Here are some delightful ways to enjoy them.
With Ice Cream
- Vanilla Ice Cream: A classic pairing that balances the sweetness of the brownies.
- Mint Chocolate Chip: Adds a refreshing twist that complements the chocolatey goodness.
Drizzled with Sauce
- Chocolate Sauce: Pour warm chocolate sauce over the brownies for an extra indulgent treat.
- Caramel Sauce: A drizzle of caramel adds a lovely contrast to the chocolate.
Topped with Whipped Cream
- Homemade Whipped Cream: Light and fluffy, it enhances the richness of the brownies beautifully.
- Flavored Whipped Cream: Try vanilla or almond extract for an extra layer of flavor.
As Part of a Dessert Platter
- Brownie Bites: Cut smaller pieces and include them on a platter with other mini desserts.
- Fruit Garnish: Fresh berries or sliced bananas can add color and freshness to your dessert spread.

How to Perfect Marshmallow Brownies
To ensure your marshmallow brownies come out perfectly every time, consider these helpful tips.
- Use Quality Ingredients: High-quality cocoa powder and chocolate chips enhance the flavor significantly.
- Don’t Overmix the Batter: Mixing just until combined prevents tough brownies, keeping them fudgy.
- Check Oven Temperature: An oven thermometer can confirm your oven is at the right temperature for baking.
- Cool Completely Before Cutting: Letting them cool allows the brownies to set properly for neat slices.
- Store Properly: Keep leftovers in an airtight container to maintain their freshness and texture.
- Experiment with Mix-Ins: Add nuts or different types of chips for a unique twist on this classic dessert.
Best Side Dishes for Marshmallow Brownies
Pairing side dishes with marshmallow brownies can elevate your dessert experience. Here are some great options.
- Fruit Salad: A light and refreshing option that balances the richness of the brownies.
- Chocolate Fondue: Perfect for dipping fruit, pretzels, or even brownie pieces for an interactive treat.
- Coffee or Espresso: The bitterness of coffee pairs wonderfully with sweet desserts like these brownies.
- Milkshakes: Thick milkshakes can complement the chocolate flavors while providing a fun drink option.
- Cheese Platter: Mild cheeses can offer a savory contrast to sweet desserts like marshmallow brownies.
- Nutty Granola Bars: A crunchy texture from granola bars can create an enjoyable contrast when served alongside.
Common Mistakes to Avoid
When making Marshmallow Brownies, a few common mistakes can lead to less-than-perfect results. Here are some pitfalls to avoid.
- Skipping the Parchment Paper: Not lining your baking pan with parchment paper may cause the brownies to stick. Always line the pan to ensure easy removal.
- Overmixing the Batter: Mixing too much can make your brownies tough. Mix just until combined to keep them fudgy and soft.
- Incorrect Oven Temperature: Baking at the wrong temperature can lead to undercooked or overcooked brownies. Always preheat your oven properly and use an oven thermometer for accuracy.
- Using Low-Quality Cocoa Powder: Low-quality cocoa can affect flavor. Opt for high-quality Dutch process cocoa powder for richer taste.
- Not Cooling Before Cutting: Cutting warm brownies can result in messy pieces. Let them cool completely on a rack before slicing.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftover Marshmallow Brownies in an airtight container.
- They will stay fresh for up to 5 days in the refrigerator.
Freezing Marshmallow Brownies
- Wrap brownies tightly in plastic wrap and place them in a freezer-safe container.
- You can freeze them for up to 3 months for future enjoyment.
Reheating Marshmallow Brownies
- Oven: Preheat your oven to 350°F and warm the brownies for about 10 minutes.
- Microwave: Heat individual servings for about 15-20 seconds on a microwave-safe plate.
- Stovetop: Place a brownie in a pan over low heat, covering it with a lid until warmed through.
Frequently Asked Questions
Here are some frequently asked questions regarding Marshmallow Brownies that may help you during your baking journey.
Can I use different types of chocolate chips in Marshmallow Brownies?
Yes, you can substitute semi-sweet chocolate chips with milk chocolate or dark chocolate chips based on your preference.
How do I make my Marshmallow Brownies extra fudgy?
To achieve extra fudginess, reduce the flour slightly or add an extra egg yolk for moisture.
Can I add nuts to my Marshmallow Brownies?
Absolutely! Chopped nuts like walnuts or pecans are great additions that enhance flavor and texture.
What is the best way to cut Marshmallow Brownies?
For clean cuts, use a sharp knife that is heated under hot water, then wiped dry before slicing through the brownies.
Final Thoughts
These Marshmallow Brownies are not only delicious but also versatile. You can customize them by adding your favorite mix-ins like nuts or different types of chocolate. Try this recipe today and enjoy a delightful dessert that brings comfort and joy!
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📖 Recipe Card
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Marshmallow Brownies
- Total Time: 1 hour 5 minutes
- Yield: Approximately 16 servings 1x
Description
Indulge in the ultimate dessert experience with these Marshmallow Brownies! This delightful recipe brings together rich, fudgy chocolate brownies and a luscious swirl of fluffy marshmallow crème on top. Perfect for any occasion, whether it’s a party, potluck, or family gathering, these brownies are sure to impress. Each bite delivers a melt-in-your-mouth texture and an irresistible combination of flavors that will satisfy even the most discerning sweet tooth. With easy-to-follow steps and simple ingredients, you can whip up this decadent treat in no time. Elevate your dessert game with these scrumptious marshmallow brownies!
Ingredients
- 2 cups granulated sugar
- 3 large eggs
- 1 egg yolk
- 1/2 cup unsalted butter (melted)
- 2 tsp pure vanilla extract
- 1/2 cup oil (canola or vegetable)
- 3/4 cup all-purpose flour
- 1 cup unsweetened cocoa powder
- 1 1/2 tbsp cornstarch
- 1/2 tsp salt
- 1 cup semi-sweet chocolate chips
- 1 cup marshmallow crème
Instructions
- Preheat your oven to 325°F. Prepare a 9×9-inch baking pan with nonstick spray and line it with parchment paper.
- In a bowl, sift together flour, cocoa powder, cornstarch, and salt; set aside.
- In a stand mixer, beat sugar, eggs, and egg yolk on high until pale (about 5 minutes). Add melted butter and oil; mix until combined.
- Gradually add dry ingredients; mix on low until just combined. Fold in chocolate chips.
- Pour batter into the prepared pan, dollop melted marshmallow crème on top, and swirl lightly with a knife.
- Bake for 45-55 minutes until a toothpick comes out slightly wet but not batter-covered. Let cool before cutting.
- Prep Time: 15 minutes
- Cook Time: 50 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie (57g)
- Calories: 220
- Sugar: 20g
- Sodium: 120mg
- Fat: 10g
- Saturated Fat: 6g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 25mg