Fluffernutter Brownies
Fluffernutter Brownies are a delightful twist on the classic dessert, combining creamy peanut butter with vegan marshmallow fluff layered between rich, fudgy brownies. Perfect for any occasion, these brownies offer a delicious balance of flavors and textures that will impress friends and family alike. Their unique combination of ingredients makes them a standout treat that everyone can enjoy!
Why You’ll Love This Recipe
- Irresistible Flavor: The mix of chocolate, peanut butter, and marshmallow creates a decadent taste that is hard to resist.
- Easy to Bake: With straightforward steps, even novice bakers can whip up these brownies without hassle.
- Perfect for Any Occasion: Whether it’s a birthday party, holiday gathering, or just a cozy night in, these brownies fit right in.
- Customizable: Feel free to add nuts or different types of chocolate chips for an extra twist!
- Impressive Presentation: Layering the fluff between brownies gives an eye-catching look that will wow your guests.
Tools and Preparation
To create the perfect Fluffernutter Brownies, having the right tools is essential. Here’s what you’ll need:
Essential Tools and Equipment
- Mixing bowl
- Whisk
- Saucepan
- Instant-read thermometer
- 9×13-inch baking dish
- Parchment paper
Importance of Each Tool
- Mixing bowl: A sturdy mixing bowl is vital for combining ingredients evenly.
- Whisk: Use this tool to blend dry ingredients thoroughly and ensure no lumps remain.
- Instant-read thermometer: Helps achieve the correct temperature for melting butter and sugar perfectly.

Ingredients
Fluffernutter Brownies are creamy peanut butter and vegan marshmallows fluff sandwiched and baked between two layers of fudgy brownies.
For the Brownie Batter
- 1 ⅓ cups (167.3 g) regular unsweetened cocoa powder
- 1 cup (125 g) all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon kosher salt
- 1 teaspoon espresso powder
- 1 cup (2 sticks / 227 g) unsalted butter (room temperature)
- 2 cups (400 g) granulated sugar
- 1 cup (168 g) semi-sweet chocolate chips
- 1 tablespoon vanilla extract
- 4 large eggs (room temperature)
For the Fluff Layer
- ¾ cup (193.5 g) creamy peanut butter
- 1 cup (96 g) vegan marshmallows fluff
How to Make Fluffernutter Brownies
Step 1: Preheat the Oven
Preheat your oven to 350°F. Line a 9×13-inch ceramic baking dish with parchment paper to prevent sticking.
Step 2: Combine Dry Ingredients
In a large bowl, combine the following:
1. Add cocoa powder, flour, baking powder, salt, and espresso powder.
2. Whisk until fully combined and set aside.
Step 3: Melt Butter and Sugar
In a large saucepan over medium heat:
1. Add butter and granulated sugar.
2. Once melted, bring it to a low boil and cook for about 2 minutes until it reaches 230°F on an instant-read thermometer, stirring occasionally.
Step 4: Mix in Chocolate Chips
Remove from heat:
1. Stir in semi-sweet chocolate chips and vanilla until completely melted. The mixture may appear grainy; allow it to cool for about 10 minutes.
Step 5: Incorporate Eggs
Add eggs one at a time:
1. Stir constantly until the mixture is smooth after each addition.
Step 6: Combine Dry Ingredients
Slowly add the dry ingredients into the chocolate mixture:
1. Mix until just combined; be careful not to overmix as it will make the batter thick.
Now you’re ready to bake your delightful Fluffernutter Brownies! The steps are simple but lead to an incredibly satisfying dessert that’s sure to be a hit!
How to Serve Fluffernutter Brownies
Fluffernutter Brownies are deliciously indulgent and can be served in various ways to enhance your dessert experience. Here are some creative serving suggestions to make the most of these tasty treats.
Warm with Ice Cream
- Serve the brownies warm, topped with a scoop of vanilla or chocolate ice cream for a delightful contrast in temperature and texture.
Drizzled with Chocolate Sauce
- Add a drizzle of rich chocolate sauce over the brownies for an extra layer of sweetness and a beautiful presentation.
Topped with Whipped Cream
- A dollop of whipped cream on top of each brownie adds a light, airy element that complements the dense fudge nicely.
Paired with Fresh Berries
- Serve alongside fresh strawberries or raspberries for a refreshing burst of flavor that balances the sweetness.
Enjoyed with Coffee
- Pair your brownies with a cup of freshly brewed coffee or espresso for a perfect afternoon treat that enhances the chocolate flavor.
Cut into Bite-Sized Pieces
- For parties or gatherings, cut the brownies into small squares and serve them on a platter for easy snacking.
How to Perfect Fluffernutter Brownies
To ensure your Fluffernutter Brownies turn out perfectly every time, keep these tips in mind.
- Use Room Temperature Ingredients – Ingredients like eggs and butter should be at room temperature for better mixing and texture.
- Don’t Overmix the Batter – Mix until just combined to avoid tough brownies; overmixing can lead to dense results.
- Let Cool Before Slicing – Allow the brownies to cool completely before cutting to maintain shape and prevent them from crumbling.
- Use Quality Chocolate – Choose high-quality semi-sweet chocolate chips for richer flavor and better melting properties.
- Experiment with Peanut Butter Types – Try different styles of peanut butter (creamy vs. chunky) for variations in texture and taste.
- Store Properly – Keep leftovers in an airtight container at room temperature for up to 3 days, or refrigerate for longer freshness.
Best Side Dishes for Fluffernutter Brownies
Fluffernutter Brownies can shine even brighter when paired with complementary side dishes. Here are some great options:
- Fresh Fruit Salad – A mix of seasonal fruits adds brightness and freshness, balancing the richness of the brownies.
- Vanilla Yogurt Parfait – Layer yogurt with granola and berries for a creamy, crunchy contrast that pairs well with chocolate.
- Chocolate Chip Cookies – For true dessert lovers, serve these classic cookies alongside your brownies for double the indulgence.
- Nutty Granola Bars – The crunchiness of granola bars provides texture and flavor variety when enjoyed next to gooey brownies.
- Homemade Hot Chocolate – A warm cup of hot chocolate makes an excellent beverage pairing that complements the flavors of the brownies.
- Cream Cheese Frosting Dip – Offer this sweet dip as an option for those who want an additional layer of flavor on their brownie bites.
- Caramel Sauce – Drizzle caramel sauce on top or serve it on the side for those who enjoy extra sweetness.
- Chilled Lemonade – The refreshing tartness of lemonade helps cleanse the palate between bites of rich brownie goodness.
Common Mistakes to Avoid
When making Fluffernutter Brownies, it’s easy to make some common mistakes. Here are a few to watch out for.
- Overmixing the batter: This can lead to tough brownies. Mix until just combined for a fudgy texture.
- Incorrect oven temperature: Always preheat your oven to 350°F for even baking. An improperly heated oven can result in unevenly cooked brownies.
- Not lining the baking dish: Forgetting parchment paper can cause the brownies to stick. Always line your dish for easy removal and cleanup.
- Skipping the cooling time: Allowing the chocolate mixture to cool is crucial. If you add eggs too soon, they may scramble in the hot mixture.
- Ignoring ingredient temperatures: Using room temperature eggs and butter helps create a smoother batter. Cold ingredients can lead to lumps or uneven mixing.

Storage & Reheating Instructions
Refrigerator Storage
- Store Fluffernutter Brownies in an airtight container in the fridge.
- They will last up to one week when properly stored.
Freezing Fluffernutter Brownies
- Wrap individual brownies in plastic wrap and place them in a freezer-safe bag.
- They can be frozen for up to three months for best quality.
Reheating Fluffernutter Brownies
- Oven: Preheat the oven to 350°F and warm the brownies for about 10 minutes.
- Microwave: Heat for about 15-20 seconds at a time until warm but not hot.
- Stovetop: Use a non-stick pan over low heat, covered, for about 5 minutes, checking frequently.
Frequently Asked Questions
Here are some common queries regarding Fluffernutter Brownies.
Can I use crunchy peanut butter instead of creamy?
You can absolutely use crunchy peanut butter! It will add extra texture and flavor.
How do I make vegan Fluffernutter Brownies?
To keep it vegan, ensure that all ingredients such as chocolate chips and marshmallow fluff are plant-based. The recipe provided is already suitable!
What if I don’t have espresso powder?
You can omit espresso powder if you don’t have it. It enhances chocolate flavor but isn’t essential.
How do I know when my brownies are done?
Insert a toothpick into the center; it should come out with a few moist crumbs but not wet batter.
Can I customize my Fluffernutter Brownies?
Absolutely! You can add nuts or different types of chocolate chips according to your taste preferences.
Final Thoughts
Fluffernutter Brownies are a delightful treat that combines rich chocolate with creamy peanut butter and fluffy marshmallows. Their versatility allows for various customizations like adding nuts or different chocolates. Give this recipe a try, and enjoy these decadent brownies at your next gathering!
Fluffernutter Brownies
Indulge in the delightful experience of Fluffernutter Brownies, a unique twist on classic brownies that combines the rich flavors of creamy peanut butter and fluffy vegan marshmallows. These fudgy treats are layered to create a mouthwatering dessert that’s perfect for any occasion. Whether it’s a cozy night in, a festive gathering, or simply satisfying your sweet tooth, this recipe is sure to impress friends and family alike. With easy preparation steps, you can whip up these brownies quickly and customize them with your favorite add-ins for an extra touch. Get ready to enjoy a luscious dessert that balances decadence with the nostalgia of childhood flavors.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: Approximately 12 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 1 ⅓ cups regular unsweetened cocoa powder
- 1 cup all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon kosher salt
- 1 cup unsalted butter (room temperature)
- 2 cups granulated sugar
- 1 cup semi-sweet chocolate chips
- 4 large eggs (room temperature)
- ¾ cup creamy peanut butter
- 1 cup vegan marshmallows fluff
Instructions
- Preheat your oven to 350°F and line a 9×13-inch baking dish with parchment paper.
- In a mixing bowl, combine cocoa powder, flour, baking powder, salt, and espresso powder.
- Melt butter and sugar in a saucepan over medium heat until boiling; cook for about 2 minutes.
- Remove from heat and mix in chocolate chips and vanilla until melted; let cool for about 10 minutes.
- Stir in eggs one at a time until smooth, then gently incorporate the dry ingredients until just combined.
- Pour half the brownie batter into the lined dish, spread peanut butter and marshmallow fluff over it, then top with the remaining brownie batter.
- Bake for approximately 25-30 minutes or until a toothpick comes out with moist crumbs.
Nutrition
- Serving Size: 1 brownie (68g)
- Calories: 320
- Sugar: 30g
- Sodium: 150mg
- Fat: 18g
- Saturated Fat: 10g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 2g
- Protein: 5g
- Cholesterol: 60mg
