Marshmallow Brownies
These Marshmallow Brownies are the perfect treat for any occasion! With their rich, fudgy chocolate base, combined with gooey marshmallow fluff swirled on top, they are sure to impress friends and family. Ideal for birthday parties, potlucks, or simply a delightful dessert at home, these brownies stand out with their unique flavor and texture. Once you try them, they will quickly become a favorite!
Why You’ll Love This Recipe
- Easy to Make: This recipe features simple steps that anyone can follow, making it perfect for beginner bakers.
- Decadent Flavor: The combination of chocolate chips and marshmallow fluff creates an indulgent taste that is hard to resist.
- Versatile Treat: These marshmallow brownies can be enjoyed as a dessert or a sweet snack anytime during the day.
- Perfect for Sharing: With 16 servings, these brownies are great for gatherings or special occasions.
- Customizable Options: Feel free to add nuts or swap chocolate chips for your favorite candies to make them your own.
Tools and Preparation
Before diving into this delicious recipe, gather your tools. Having everything ready will streamline your baking process.
Essential Tools and Equipment
- Mixing bowls
- Whisk or mixer with whisk attachment
- Rubber spatula
- 9X9-inch baking pan
- Parchment paper
- Microwave-safe bowl
Importance of Each Tool
- Mixing bowls: These allow you to combine ingredients effectively without mess.
- Rubber spatula: Perfect for folding in chocolate chips and ensuring no batter is wasted from the sides of the bowl.
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)
For the Dry Mixture
- 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
For Swirling
- 1 cup Semi-sweet chocolate chips
- 1 cup Marshmallow crème
How to Make Marshmallow Brownies
Step 1: Preheat the Oven
Preheat your oven to 325°F. Prepare a 9X9-inch baking pan by spraying it with nonstick spray. Line the bottom and two sides with parchment paper for easy removal later.
Step 2: Prepare Dry Ingredients
In a medium bowl, sift together the flour, cocoa powder, and cornstarch. Add in the salt and set aside while you mix wet ingredients.
Step 3: Mix Wet Ingredients
Using a mixer with a whisk attachment, beat the sugar, eggs, and egg yolk on high speed for about 5 minutes until it becomes pale in color. While mixing, melt the butter in the microwave and let it cool.
Step 4: Combine Ingredients
Add oil, melted butter, and vanilla extract to the egg mixture. Mix on low speed until combined. Gradually add in dry ingredients and mix on low until just combined. Fold in semi-sweet chocolate chips using a rubber spatula.
Step 5: Add Marshmallow Fluff
Pour brownie batter into the prepared pan. In a microwave-safe bowl, melt the marshmallow fluff for about 20-30 seconds until it softens. Use a teaspoon to dollop marshmallow fluff on top of brownie batter. Lightly swirl the fluff into the batter using a butter knife.
Step 6: Bake
Place in preheated oven and bake for 45-55 minutes. Check doneness by inserting a toothpick; it should come out slightly wet but not wet with batter. If necessary, bake an additional 5 minutes.
Step 7: Cool and Serve
Allow brownies to cool completely on a cooling rack before cutting them into squares and serving them fresh.
Enjoy your delicious Marshmallow Brownies! Each bite will leave you craving more!
How to Serve Marshmallow Brownies
Marshmallow brownies are a delightful treat that can be served in various ways. Whether you want to add a special touch or keep it simple, these suggestions will elevate your dessert experience.
A La Mode
- Serve warm marshmallow brownies with a scoop of vanilla ice cream for a classic combination. The hot fudge pairs perfectly with the cold ice cream.
With Whipped Cream
- Top each brownie with a dollop of freshly whipped cream. This adds a light and creamy texture that complements the fudgy base.
Drizzled with Chocolate Sauce
- Add an extra layer of flavor by drizzling chocolate sauce over the top. This is perfect for chocolate lovers who crave even more richness.
Nuts and Sprinkles
- Enhance the presentation by adding chopped nuts or colorful sprinkles on top. This adds crunch and fun visual appeal, especially for kids’ parties.
Coffee Pairing
- Serve alongside a cup of coffee or espresso. The bitterness of coffee balances the sweetness of the brownies, creating a delightful contrast.
Fresh Berries
- Fresh strawberries or raspberries make a refreshing side that cuts through the richness of the brownies. They also add a pop of color to your dessert plate.

How to Perfect Marshmallow Brownies
Creating perfect marshmallow brownies requires attention to detail and some handy tips. Follow these guidelines for the best results.
- Use room temperature ingredients: Bringing eggs and butter to room temperature helps them combine better, resulting in a smoother batter.
- Monitor baking time carefully: Check for doneness at 45 minutes. Overbaking can lead to dry brownies, while underbaking gives you gooey perfection.
- Cool completely before cutting: Allowing brownies to cool ensures they set properly and makes cutting easier without crumbling.
- Experiment with toppings: Consider adding caramel sauce or nuts on top for added flavor and texture variations.
Best Side Dishes for Marshmallow Brownies
Pairing side dishes with marshmallow brownies can enhance your dessert experience. Here are some delicious options:
- Vanilla Ice Cream: A classic pairing that balances the richness of the brownies wonderfully.
- Fresh Fruit Salad: A light and refreshing option that complements the dense chocolate flavor.
- Chocolate Milkshake: A decadent drink that pairs beautifully with fudgy desserts.
- Coffee Cake: The slight bitterness of coffee cake provides an excellent contrast to sweet brownies.
- Cheesecake Bites: Small bites of cheesecake add another layer of indulgence without overwhelming.
- Caramel Sauce Dip: A sweet dip that elevates each bite of brownie into something truly special.
- Mint Tea: A refreshing herbal tea that helps cleanse the palate after rich desserts.
- Pecan Pie Bars: Another sweet treat that harmonizes well with chocolate flavors while offering different textures.
Common Mistakes to Avoid
When making marshmallow brownies, there are a few common pitfalls. Here are some mistakes to be aware of:
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Ignoring the oven temperature: Always preheat your oven to 325°F. Baking at the wrong temperature can lead to unevenly cooked brownies.
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Overmixing the batter: Once you add the dry ingredients, mix just until combined. Overmixing can make your brownies tough instead of fudgy.
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Using cold ingredients: Make sure your eggs and butter are at room temperature. This helps create a smoother batter and ensures even baking.
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Not checking for doneness: Rely on a toothpick test to check if your brownies are done. They should come out slightly wet for that perfect fudgy texture.
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Skipping the cooling time: Let your brownies cool completely before cutting. This helps them set and makes slicing easier.

Storage & Reheating Instructions
Refrigerator Storage
- Store marshmallow brownies in an airtight container.
- They will last for up to 5 days in the refrigerator.
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.
Reheating Marshmallow Brownies
- Oven: Preheat to 350°F and warm for about 10 minutes.
- Microwave: Heat one brownie at a time for 15-20 seconds.
- Stovetop: Warm in a skillet over low heat until soft.
Frequently Asked Questions
Here are some frequently asked questions about marshmallow brownies:
Can I use different types of chocolate chips in marshmallow brownies?
Yes, you can use milk chocolate or dark chocolate chips based on your preference!
What is the best way to swirl the marshmallow fluff?
Dollop it on top of the brownie batter and use a butter knife for light swirling. This creates beautiful patterns without mixing it too much.
How do I know when my marshmallow brownies are done?
Insert a toothpick; it should come out slightly wet but not with raw batter.
Can I customize my marshmallow brownies?
Absolutely! You can add nuts, different chocolate flavors, or even toppings like sprinkles or caramel drizzle.
Final Thoughts
Marshmallow brownies are a delightful treat that combines fudgy chocolate goodness with sweet marshmallow fluff. They are versatile and perfect for any occasion. Feel free to customize them with your favorite add-ins or toppings to make them uniquely yours! Enjoy baking these delicious treats!

Marshmallow Brownies
- Total Time: 1 hour 10 minutes
- Yield: Serves approximately 16 brownies 1x
Description
Indulge in the ultimate dessert experience with these delectable Marshmallow Brownies. This easy-to-follow recipe combines a rich, fudgy chocolate base with a heavenly swirl of gooey marshmallow fluff, creating a perfect balance of flavors and textures. Ideal for any gathering—be it birthday parties, potlucks, or cozy nights at home—these brownies are sure to impress everyone. With just a few simple ingredients, you can whip up this delightful treat that will quickly become a beloved favorite in your household.
Ingredients
- 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
- 1 cup marshmallow crème
Instructions
- Preheat your oven to 325°F. Prepare a 9X9-inch baking pan with nonstick spray and line it with parchment paper.
- In a medium bowl, sift together the flour, cocoa powder, and salt; set aside.
- In another bowl, beat sugar, eggs, and egg yolk until pale. Mix in melted butter and oil.
- Gradually incorporate dry ingredients until just combined. Fold in chocolate chips.
- Pour the batter into the prepared pan and dollop marshmallow crème on top; swirl gently with a knife.
- Bake for 45-55 minutes or until a toothpick inserted comes out slightly wet but not with batter.
- Cool completely before cutting into squares.
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie (60g)
- Calories: 260
- Sugar: 26g
- Sodium: 120mg
- Fat: 12g
- Saturated Fat: 6g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 50mg