These Marshmallow Brownies are a delightful treat that combines rich, fudgy chocolate brownies with a luscious layer of marshmallow fluff. Perfect for parties, family gatherings, or just a cozy night in, these brownies stand out with their gooey texture and sweet flavor. Whether you’re an experienced baker or a kitchen newbie, this recipe is easy to follow and sure to impress everyone who gets a taste.

Why You’ll Love This Recipe
- Decadent Flavor: The combination of chocolate and marshmallow creates a rich taste that is hard to resist.
- Easy to Make: With straightforward steps, you can whip up these brownies in no time.
- Perfect for Any Occasion: Whether it’s a birthday party or a simple afternoon snack, these brownies fit right in.
- Customizable: Feel free to add nuts or swap the chocolate chips for your favorite mix-ins!
- Great for Sharing: Cut them into squares and share with friends and family; they’re sure to be a hit!
Tools and Preparation
Before diving into this delicious recipe, gather your essential tools. This will make the process smoother and more enjoyable.
Essential Tools and Equipment
- Mixing bowl
- Electric mixer
- Rubber spatula
- 9X9-inch baking pan
- Parchment paper
- Whisk
Importance of Each Tool
- Mixing bowl: A good mixing bowl helps combine all ingredients thoroughly.
- Electric mixer: This tool saves time when beating eggs and sugar together for that fluffy texture.
- Rubber spatula: Ideal for folding in chocolate chips without breaking the batter’s structure.
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 creme
How to Make Marshmallow Brownies
Step 1: Preheat the Oven
Preheat the oven to 325°F. Spray a 9X9-inch baking pan with nonstick baking 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:
1. All-purpose flour
2. Cocoa powder
3. Cornstarch
Add in the salt and set aside.
Step 3: Beat Eggs and Sugar
Using a mixer with a whisk attachment, beat together:
1. Sugar
2. Eggs
3. Egg yolk
Mix on high speed for about 5 minutes until it becomes pale in color. Meanwhile, melt the butter in the microwave and allow it to cool.
Step 4: Combine Wet Ingredients
Add oil, melted butter, and vanilla extract to the egg mixture. Mix on low speed until combined.
Step 5: Incorporate Dry Ingredients
Gradually add in the dry ingredients while mixing on low speed until just combined. Fold in chocolate chips using a rubber spatula.
Step 6: Add Marshmallow Fluff
Pour brownie batter into the prepared pan. Melt marshmallow fluff in the microwave for 20-30 seconds until soft. Use a teaspoon to dollop marshmallow fluff on top of brownie batter and lightly swirl with a butter knife.
Step 7: Bake
Bake for 45-55 minutes or until a toothpick inserted comes out slightly wet but not covered with raw batter. If necessary, bake an additional 5 minutes if too much batter comes out.
Step 8: Cool Before Serving
Allow brownies to cool completely on a cooling rack before cutting into squares and serving.
Now you’re ready to enjoy these delicious Marshmallow Brownies!
How to Serve Marshmallow Brownies
Marshmallow brownies are a delightful treat that can be enjoyed in various ways. Whether you’re serving them at a party or enjoying them at home, these serving suggestions will elevate your dessert experience.
With Ice Cream
- Vanilla Ice Cream: A classic pairing that balances the rich chocolate flavors.
- Mint Chocolate Chip: The refreshing mint flavor complements the fudginess of the brownies.
Drizzled with Sauce
- Chocolate Sauce: Adds extra chocolate richness and decadence.
- Caramel Sauce: A sweet contrast that enhances the overall flavor profile.
Topped with Whipped Cream
- Fresh Whipped Cream: Lightens up the dessert and adds a creamy texture.
- Flavored Whipped Cream: Try adding a hint of vanilla or almond for added depth.
Accompanied by Fruits
- Fresh Berries: Strawberries or raspberries offer a tartness that cuts through the sweetness.
- Bananas: Sliced bananas add a creamy texture and natural sweetness.
As Part of a Dessert Platter
- Mixed Desserts: Pair with cookies, cheesecake bites, and other favorites for variety.
- Decorative Presentation: Use colorful plates or platters to make it visually appealing.

How to Perfect Marshmallow Brownies
To achieve the ideal marshmallow brownies, follow these essential tips for a perfect bake every time.
- Use quality cocoa powder: Opt for Dutch process cocoa for deeper chocolate flavor.
- Don’t overmix: Combine ingredients just until incorporated to maintain fudginess.
- Check baking time: Start checking your brownies at 45 minutes to avoid overbaking.
- Cool completely: Allow brownies to cool before cutting for clean edges and neat pieces.
- Experiment with toppings: Try adding nuts or different flavored chips for extra texture and taste.
Best Side Dishes for Marshmallow Brownies
Pairing side dishes with marshmallow brownies can enhance your dessert experience. Here are some great options to consider:
- Coffee: A strong cup of coffee balances the sweetness of the brownies.
- Milk: Classic whole milk provides a creamy complement to the rich chocolate.
- Fruit Salad: A mix of fresh fruits adds brightness and freshness.
- Cheese Plate: A selection of mild cheeses can contrast nicely with the sweetness.
- Nut Mix: Salty nuts offer a crunchy texture that pairs well with soft brownies.
- Cookies: Serve alongside chocolate chip cookies for a double dessert delight.
- Pudding: Chocolate or vanilla pudding adds an additional layer of creaminess.
Common Mistakes to Avoid
Many people make small errors when making marshmallow brownies. Avoiding these common mistakes will ensure your brownies turn out perfect every time.
- Not measuring ingredients accurately: Baking is a science. Use proper measuring cups and spoons for precise amounts, especially for flour and cocoa powder.
- Overmixing the batter: Mixing too long can lead to tough brownies. Mix just until combined for a fudgy texture.
- Using cold eggs: Cold eggs can affect the batter consistency. Always use room temperature eggs for better emulsification.
- Skipping the parchment paper: Lining the pan with parchment helps prevent sticking. Take this extra step for easy removal of your brownies.
- Not letting them cool completely: Cutting warm brownies leads to a messy outcome. Allow them to cool on a rack before slicing.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Keep brownies at room temperature for the best texture.
Freezing Marshmallow Brownies
- Wrap individual brownies in plastic wrap, then place them in a freezer bag.
- They can be frozen for up to 3 months without losing flavor.
Reheating Marshmallow Brownies
- Oven: Preheat to 350°F and heat for about 10 minutes. This restores their fudgy texture.
- Microwave: Heat one brownie on high for about 15-20 seconds. Check for warmth without overcooking.
- Stovetop: Place on a skillet over low heat, cover, and warm gently for about 5 minutes.
Frequently Asked Questions
Here are some common questions about marshmallow brownies that might help clarify your baking experience.
What makes marshmallow brownies different?
Marshmallow brownies are unique because they combine fudgy brownie batter with sweet marshmallow fluff swirled on top, adding a delightful texture and flavor contrast.
Can I use different types of chocolate chips?
Yes! You can use milk chocolate or dark chocolate chips according to your preference. This variation can change the sweetness level of the brownies.
How do I know when my marshmallow brownies are done baking?
Your brownies are done when a toothpick inserted comes out with moist crumbs but no wet batter. Remember that they will continue cooking slightly after removing from the oven.
Can I substitute ingredients in marshmallow brownies?
Absolutely! You can swap butter for coconut oil or use gluten-free flour instead of all-purpose flour if needed, based on dietary preferences.
What should I serve with marshmallow brownies?
These brownies pair beautifully with vanilla ice cream or whipped cream. A drizzle of caramel sauce also adds a lovely touch!
Final Thoughts
These marshmallow brownies are not only delicious but also versatile. You can customize them by adding nuts or different chocolates to suit your taste. Give this recipe a try; you won’t be disappointed!

Marshmallow Brownies
- Total Time: 1 hour 5 minutes
- Yield: Approximately 16 servings 1x
Description
Indulge in the ultimate dessert experience with these Marshmallow Brownies, a decadent treat that perfectly marries rich, fudgy chocolate brownies with a light and fluffy marshmallow topping. Ideal for any occasion, these brownies are sure to impress your guests while satisfying your sweet tooth. With their gooey texture and irresistible flavor, they’re perfect for celebrations or cozy nights at home. This easy-to-follow recipe will have even novice bakers creating delightful brownie squares that everyone will rave about.
Ingredients
- 2 cups white granulated sugar
- 3 large eggs
- 1/2 cup unsalted butter (melted)
- 1 cup unsweetened cocoa powder
- 1/2 cup oil (canola or vegetable)
- 3/4 cup all-purpose flour
- 1 cup semi-sweet chocolate chips
- 1 cup marshmallow fluff
Instructions
- Preheat the oven to 325°F and prepare a 9×9-inch baking pan with nonstick spray and parchment paper.
- In a medium bowl, sift together flour, cocoa powder, cornstarch, and salt; set aside.
- In a mixing bowl, beat together sugar, eggs, and egg yolk until pale. Add melted butter, oil, and vanilla; combine.
- Gradually add dry ingredients to the wet mixture until just combined. Fold in chocolate chips.
- Pour batter into the prepared pan. Microwave marshmallow fluff until soft; dollop on top of the brownie batter and swirl gently.
- Bake for 45-55 minutes or until a toothpick comes out with moist crumbs but no raw batter. Cool completely before cutting into squares.
- Prep Time: 15 minutes
- Cook Time: 50 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie square (50g)
- Calories: 210
- Sugar: 20g
- Sodium: 90mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 28g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 35mg
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