Marshmallow Brownies
These marshmallow brownies are a delightful treat that blend rich chocolate flavors with fluffy marshmallow swirls. Perfect for parties, family gatherings, or simply satisfying your sweet tooth, these brownies stand out for their fudgy texture and gooey topping. With chocolate chips throughout and a unique marshmallow fluff finish, they are sure to impress anyone who tries them.
Why You’ll Love This Recipe
- Incredibly Fudgy: The combination of melted chocolate and butter creates a brownie that’s moist and rich.
- Easy to Make: With simple ingredients and straightforward steps, you can whip these up in no time.
- Versatile Treat: Great for any occasion, from birthday parties to cozy nights in.
- Chocolate Lovers Dream: Packed with chocolate chips for an extra indulgent experience.
- Unique Presentation: The swirled marshmallow fluff adds a fun twist that looks as good as it tastes.
Tools and Preparation
Before diving into the cooking process, gather the necessary tools to ensure everything runs smoothly. Having the right equipment will make your baking experience more enjoyable.
Essential Tools and Equipment
- Mixer with whisk attachment
- 9X9-inch baking pan
- Parchment paper
- Rubber spatula
- Butter knife
- Cooling rack
Importance of Each Tool
- Mixer with whisk attachment: Ensures even mixing of ingredients for a smooth brownie batter.
- Baking pan: A 9X9-inch size is perfect for achieving the right thickness in brownies.
- Rubber spatula: Great for folding in chocolate chips without deflating the batter.
Ingredients
To make these delicious marshmallow brownies, gather the following ingredients:
For the Brownies
- 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)
Dry Ingredients
- 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
Add-ins
- 1 cup Semi-sweet chocolate chips
- 1 cup Marshmallow creme
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, then spray again to ensure easy removal after baking.
Step 2: Mix Dry Ingredients
In a medium bowl, sift together the flour, cocoa powder, cornstarch, and salt. Set this mixture aside while you prepare the wet ingredients.
Step 3: Beat Sugar and Eggs
Using a mixer fitted with a whisk attachment, beat together the sugar, eggs, and egg yolk 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 slightly.
Step 4: Combine Wet Ingredients
Add oil, melted butter, and vanilla extract to the egg mixture. Mix on low speed until well combined. Gradually add the dry ingredient mixture and blend until just combined. Gently fold in the semi-sweet chocolate chips using a rubber spatula.
Step 5: Prepare Marshmallow Topping
Pour the brownie batter into your prepared pan. Melt the marshmallow fluff in the microwave for about 20–30 seconds until it’s soft enough to dollop easily. Use a teaspoon to place dollops of marshmallow fluff on top of the brownie batter. With a butter knife, gently swirl the fluff into the batter without over-mixing.
Step 6: Bake
Bake your marshmallow brownies in the preheated oven for 45–55 minutes. Check doneness by inserting a toothpick; it should come out slightly wet but not coated in batter. If needed, bake for an additional 5 minutes.
Step 7: Cool and Serve
Allow your brownies to cool completely on a cooling rack before cutting them into squares and serving them up! Enjoy these delectable treats fresh or store them for later enjoyment.
How to Serve Marshmallow Brownies
Marshmallow brownies are a decadent treat that can be enjoyed in various ways. Here are some delightful serving suggestions that will elevate your dessert experience.
Top with Ice Cream
- Vanilla ice cream: The creamy texture pairs beautifully with the fudgy brownies.
- Chocolate ice cream: For chocolate lovers, this combo enhances the rich flavor of the brownies.
- Mint chocolate chip: A refreshing twist that adds a burst of flavor.
Drizzle with Sauce
- Chocolate sauce: A classic choice that deepens the chocolate experience.
- Caramel sauce: Adds a sweet and buttery richness that’s irresistible.
- Raspberry sauce: Offers a tangy contrast that balances the sweetness.
Add Fresh Fruits
- Raspberries: Their tartness complements the sweet marshmallow fluff.
- Strawberries: Sliced strawberries add freshness and color to your plate.
- Bananas: Sliced bananas bring a creamy texture that works well with fudge.
Serve with Whipped Cream
- Homemade whipped cream: Light and fluffy, it enhances every bite of the brownie.
- Flavored whipped cream: Try vanilla or chocolate-flavored for an extra kick.
Pair with Coffee or Tea
- Espresso: The strong coffee flavor cuts through the sweetness perfectly.
- Herbal tea: A calming option that provides a nice contrast to the rich brownies.

How to Perfect Marshmallow Brownies
Achieving perfect marshmallow brownies requires attention to detail. Here are some tips to ensure your brownies turn out delicious every time.
- Use high-quality cocoa powder: This enhances the chocolate flavor, making your brownies richer and more flavorful.
- Don’t overmix: Mix just until combined after adding dry ingredients to maintain a fudgy texture.
- Watch your baking time: Every oven is different; check for doneness a few minutes before the suggested time.
- Cool completely: Allowing them to cool fully makes cutting easier and helps them set properly.
- Store properly: Keep these brownies in an airtight container for up to a week to maintain freshness.
- Experiment with mix-ins: Add nuts or white chocolate chips for added texture and flavor variations.
Best Side Dishes for Marshmallow Brownies
When serving marshmallow brownies, consider pairing them with side dishes that complement their rich flavors. Here are some great options:
- Fresh Fruit Salad: A light and refreshing dish that balances the sweetness of the brownies.
- Chocolate Mousse: This airy dessert adds another layer of chocolate richness without being overwhelming.
- Cheesecake Bites: Mini cheesecake bites provide creamy contrast while still keeping it fun and bite-sized.
- Nutty Granola: Crunchy granola offers texture alongside the soft brownies, enhancing each bite’s enjoyment.
- Ice Cream Sundae Bar: Let guests build their own sundaes using toppings like nuts, sprinkles, and sauces for customization.
- Coffee Cake: A slice of coffee cake pairs beautifully for those who enjoy coffee-flavored treats alongside their sweets.
Common Mistakes to Avoid
When making marshmallow brownies, it’s easy to make some common mistakes. Here are a few to watch out for:
- Overmixing the batter: Mixing too much can cause tough brownies. Mix until just combined for a fudgy texture.
- Skipping the parchment paper: Not lining the pan can lead to sticking. Always line your baking dish for easy removal.
- Not measuring ingredients accurately: Using incorrect measurements can ruin the texture. Use a kitchen scale or measuring cups carefully.
- Ignoring baking time: Overbaking will dry out your brownies. Check with a toothpick and remove when slightly wet.
- Using cold ingredients: Cold eggs or butter can affect consistency. Make sure they’re at room temperature for better mixing.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container.
- Keep in the fridge for up to one week.
Freezing Marshmallow Brownies
- Wrap brownies tightly in plastic wrap.
- Freeze for up to three months.
Reheating Marshmallow Brownies
- Oven: Preheat to 350°F, place brownies on a baking sheet, and heat for about 10 minutes.
- Microwave: Heat individual pieces on medium power for 10-15 seconds.
- Stovetop: Place in a non-stick skillet over low heat; cover and warm gently for a few minutes.
Frequently Asked Questions
Here are some common questions about marshmallow brownies:
Can I use different types of chocolate chips in my Marshmallow Brownies?
Yes, you can use milk chocolate or dark chocolate chips depending on your preference. Each will give a different flavor profile.
How do I know when my Marshmallow Brownies are done?
Insert a toothpick into the center; it should come out with a few moist crumbs but not wet batter.
What can I substitute for marshmallow fluff?
You can use homemade marshmallow cream or even whipped cream as an alternative, but it may alter the texture slightly.
Can I add nuts to my Marshmallow Brownies?
Absolutely! Chopped nuts like walnuts or pecans add a nice crunch and flavor contrast to the soft brownies.
How should I serve my Marshmallow Brownies?
These brownies are delicious served warm with vanilla ice cream or drizzled with chocolate sauce!
Final Thoughts
These marshmallow brownies are not only fudgy and rich but also incredibly versatile. You can customize them by adding nuts, different flavors of chocolate chips, or even swirls of caramel. Try these delightful treats today and share them with family and friends!

Marshmallow Brownies
- Total Time: 1 hour 5 minutes
- Yield: Approximately 16 servings 1x
Description
Indulge in the ultimate sweet treat with these Marshmallow Brownies, a delightful blend of rich chocolate and fluffy marshmallow fluff. Each bite offers a fudgy texture complemented by gooey swirls of marshmallow that create a perfect balance of flavors. Ideal for any occasion, these brownies are sure to impress at parties or satisfy your cravings at home. With just a few simple ingredients and an easy preparation process, you can whip up this decadent dessert in no time. Enjoy them warm with ice cream or as is—either way, they promise to be a hit!
Ingredients
- 2 cups white granulated sugar
- 3 large eggs
- 1/2 cup unsalted butter (melted)
- 3/4 cup all-purpose flour
- 1 cup unsweetened cocoa powder
- 1 cup semi-sweet chocolate chips
- 1 cup marshmallow creme
Instructions
- Preheat your oven to 325°F and prepare a 9X9-inch baking pan with nonstick spray and parchment paper.
- In a medium bowl, sift together the flour, cocoa powder, and salt; set aside.
- Using a mixer, beat the sugar and eggs on high until pale. Add melted butter and mix on low. Gradually combine dry ingredients and fold in chocolate chips.
- Pour batter into the pan and dollop marshmallow fluff on top; swirl gently with a knife.
- Bake for 45–55 minutes; check doneness with a toothpick.
- 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 (60g)
- Calories: 230
- Sugar: 20g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 35mg