Get ready to meet your new favorite dessert. These Fluffernutter Brownies are the perfect marriage of rich, fudgy chocolate brownies, creamy peanut butter, and gooey marshmallow fluff. Every single bite is an explosion of flavor and texture that will transport you straight back to childhood. This recipe is surprisingly simple, but the results are absolutely show-stopping. If you’re looking for a dessert that’s guaranteed to impress, you’ve found it.
We’ve developed this recipe to be as straightforward as possible, delivering maximum deliciousness with minimal fuss. Forget complicated steps; this is all about pure, unadulterated brownie bliss. The rich chocolate base provides the perfect canvas for the iconic fluffernutter combination. It’s a treat that friends and family will request again and again.
What Are Fluffernutter Brownies?
A “Fluffernutter” is the classic American sandwich made with peanut butter and marshmallow fluff. Fluffernutter Brownies take that beloved flavor profile and elevate it to a whole new level. We start with a decadent, from-scratch chocolate brownie batter. Then, we swirl in generous layers of creamy peanut butter and marshmallow creme, creating a stunning marbled effect and ensuring every bite is packed with gooey goodness.
Why You’ll Love This Fluffernutter Brownies Recipe
- Incredibly Flavorful: The combination of salty peanut butter, sweet marshmallow, and rich chocolate is simply irresistible.
- Amazing Texture: You get the perfect contrast between the chewy brownie, the creamy peanut butter swirl, and the light, airy marshmallow topping.
- Easy to Make: The steps are simple and easy to follow, making this a great recipe for bakers of all skill levels. Even beginners can achieve perfect results.
- Crowd-Pleasing Dessert: These brownies are a guaranteed hit at parties, potlucks, or just as a special family treat. No one can resist them!
Key Ingredients
Creating the best Fluffernutter Brownies starts with quality ingredients. Here’s what you’ll need and why it matters.
For the Brownie Batter
- Unsalted Butter: Provides richness and a fudgy texture. Using unsalted allows you to control the salt level.
- Granulated Sugar: Sweetens the brownies and contributes to a classic crackly top.
- Eggs: Act as a binder, providing structure and richness.
- All-Purpose Flour: Gives the brownies their structure. Be careful not to overmeasure!
- Unsweetened Cocoa Powder: For a deep, rich chocolate flavor.
- Vanilla Extract & Salt: These are essential flavor enhancers that balance the sweetness.
For the Fluffernutter Swirl
- Creamy Peanut Butter: Use a standard commercial creamy peanut butter like Jif or Skippy for the best results. Natural peanut butter can separate.
- Marshmallow Fluff: Also known as marshmallow creme, this is the key to the gooey, sweet marshmallow layer.
Step-by-Step Instructions
Follow these simple steps to create the most decadent brownies imaginable.
- Prep Your Pan: Preheat your oven to 350°F (175°C). Grease an 8×8 inch baking pan and line it with parchment paper, leaving an overhang on the sides to act as handles. This makes lifting the brownies out much easier.
- Melt Butter and Sugar: In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the granulated sugar until well combined.
- Add Eggs and Vanilla: Whisk in the eggs one at a time, followed by the vanilla extract. Mix until the batter is glossy.
- Combine Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, and salt.
- Make the Brownie Batter: Gently fold the dry ingredients into the wet ingredients until just combined. Be careful not to overmix, as this can lead to cakey brownies.
- Assemble the Layers: Pour half of the brownie batter into your prepared pan and spread evenly. Dollop half of the peanut butter and half of the marshmallow fluff over the batter. Pour the remaining brownie batter on top. Finish with the rest of the peanut butter and marshmallow fluff.
- Create the Swirl: Use a knife or a skewer to gently swirl the layers together. Don’t overdo it; you want distinct layers of each flavor.
- Bake to Perfection: Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with moist crumbs, but not wet batter.
- Cool Completely: This is the hardest part! Let the brownies cool completely in the pan before lifting them out and slicing. This ensures clean cuts and a perfect fudgy texture.
Pro Tips for Perfect Brownies
- Don’t Overbake: The key to a fudgy brownie is to slightly underbake it. The brownies will continue to set as they cool.
- Cool Before Cutting: For clean, professional-looking squares, cool the brownies completely. You can even chill them in the refrigerator for 30 minutes before slicing.
- Use Room Temperature Eggs: This helps the batter mix together more smoothly for a better texture.
- Measure Flour Correctly: Spoon the flour into your measuring cup and level it off. Scooping directly from the bag can pack the flour and result in dry brownies.
Variations and Substitutions
While the classic recipe is fantastic, feel free to get creative!
- Add Chocolate Chips: Fold in a cup of semi-sweet or milk chocolate chips into the batter for extra chocolatey goodness.
- Crunchy Peanut Butter: Swap creamy for crunchy peanut butter to add extra texture.
- Add Peanuts: Sprinkle some chopped salted peanuts on top before baking for a salty crunch.
How to Store Your Fluffernutter Brownies
Store your brownies in an airtight container at room temperature for up to 4 days. You can also refrigerate them to make them last up to a week. They are delicious cold, but you can also let them come to room temperature before serving.
Frequently Asked Questions
Absolutely! To save time, you can prepare a boxed brownie mix according to the package directions for an 8×8 pan. Then, proceed with layering and swirling the peanut butter and marshmallow fluff as described in the recipe before baking.
It’s recommended to use a standard commercial creamy peanut butter (like Jif or Skippy). Natural peanut butters tend to be oilier and can separate during baking, which may affect the final texture and swirl.
You want the brownies to be slightly underdone for a fudgy texture. Bake until the edges are set and a toothpick inserted into the center comes out with moist, fudgy crumbs attached, but not wet batter. The brownies will finish setting as they cool.
Store them in an airtight container at room temperature for up to 4 days. If you need them to last longer, they will keep in the refrigerator for up to a week.
The key to clean slices is patience! Allow the brownies to cool completely to room temperature. For even better results, chill them in the refrigerator for 30-60 minutes. Use a large, sharp knife, and wipe it clean between each cut.
More Delicious Dessert Recipes
If you loved these brownies, you’ll adore some of our other sweet creations. Try our famous No-Bake Peanut Butter Pie for another peanut butter delight. For a cookie-based treat, our Soft Peanut Butter Cookies (coming soon) are a must-try. And if you’re in the mood for something fruity, our Easy Apple Puff Pastry Tarts are simple and elegant.
Share and Enjoy!
We are so excited for you to try this Fluffernutter Brownies recipe. It’s a true showstopper that’s as fun to make as it is to eat. If you make it, please leave a comment below and let us know how it turned out! We love hearing from you. For more amazing recipes, be sure to follow us on Pinterest.
Fluffernutter Brownies Recipe
Fluffernutter Brownies: The Ultimate Gooey & Chewy Recipe
Ingredients
Equipment
Instructions
- Preheat oven to 350°F (175°C). Grease and line an 8x8 inch baking pan with parchment paper, leaving an overhang on the sides.
- In a medium saucepan, melt the butter over low heat. Remove from heat and stir in sugar. Whisk in the eggs one at a time, then stir in the vanilla extract until glossy.
- In a separate bowl, whisk together the flour, cocoa powder, and salt.
- Gently fold the dry ingredients into the wet ingredients until just combined. Do not overmix.
- Spread half of the brownie batter into the prepared pan. Dollop half of the peanut butter and marshmallow fluff over the batter. Top with the remaining brownie batter, then the remaining peanut butter and fluff. Use a knife to gently swirl the layers together.
- Bake for 30-35 minutes, or until a toothpick inserted into the center comes out with moist crumbs attached.
- Let the brownies cool completely in the pan on a wire rack before lifting out and slicing into 16 squares.
Notes
Allowing the brownies to cool completely is essential for getting clean, perfect slices.
Use a standard commercial creamy peanut butter for the best swirling consistency.
