If you love a combo that’s creamy, chocolatey, and irresistibly gooey, you’re going to adore this Fluffernutter Brownies Recipe. It perfectly layers rich, fudgy brownies with swirls of fluffy marshmallow and luscious peanut butter, creating a dessert that’s truly a showstopper. Whether you’re craving a sweet treat for a cozy night in or impressing guests with an unexpected twist, these brownies deliver big-time flavor and that perfect ooey-gooey texture that keeps everyone coming back for more.
Ingredients You’ll Need
The magic of this Fluffernutter Brownies Recipe lies in its simple yet thoughtfully chosen ingredients. Each one plays a special role in building up the rich, moist texture and that classic peanut butter-marshmallow flavor punch.
- 1 cup unsalted butter: Brings buttery richness and keeps the brownies moist and tender.
- 1 cup granulated sugar: Adds sweetness and helps create a fine crumb texture.
- 1 cup brown sugar: Contributes deep, caramel notes that enhance the chocolate.
- 3 large eggs: Bind everything together while lending structure to the brownies.
- 2 teaspoons vanilla extract: Brightens flavors and adds warmth beneath the chocolate and peanut butter.
- 1 cup all-purpose flour: The backbone that gives the brownies their soft yet sturdy bite.
- 1 cup unsweetened cocoa powder: Provides deep chocolate flavor and that rich color.
- 1/2 teaspoon salt: Balances the sweetness and intensifies all the flavors.
- 3/4 cup marshmallow fluff: The signature soft, cloud-like element that makes this recipe unique and fun.
- 3/4 cup creamy peanut butter: Adds nutty richness and complements the marshmallow perfectly.
- 1/2 cup chocolate chips or chunks (optional): For an extra burst of melty chocolate goodness in every bite.
How to Make Fluffernutter Brownies Recipe
Step 1: Prepare Your Pan and Oven
Start by preheating your oven to 350 degrees Fahrenheit (175 degrees Celsius). Line an 8×8-inch baking pan with parchment paper to make sure your brownies come out clean and slide right off without fuss. This simple prep step saves you time and cleanup later.
Step 2: Melt Butter and Mix with Sugars
Next, melt the butter gently in a saucepan or microwave-safe bowl, then let it cool just a bit so it doesn’t cook the eggs in the next step. Whisk the granulated and brown sugars into the melted butter until the mixture is smooth and glossy, setting a lovely base for your batter.
Step 3: Add Eggs and Vanilla
Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract. The batter will become thick and shiny here, which is exactly what you want — it means you’re building structure and richness.
Step 4: Combine Dry Ingredients
Whisk together the unsweetened cocoa powder, all-purpose flour, and salt in a separate bowl, then gently fold those dry ingredients into your wet mixture. Stir just until combined—overmixing will cause dense brownies rather than fudgy ones.
Step 5: Layer and Swirl the Fluff and Peanut Butter
Pour about half of your brownie batter into the lined pan and spread it evenly. Drop spoonfuls of creamy peanut butter and marshmallow fluff over the surface. Using a knife or skewer, gently swirl the peanut butter and fluff into the batter to create gorgeous marbled pockets of flavor.
Step 6: Add Remaining Batter and Repeat
Pour the rest of the brownie batter on top, smoothing it out. Feel free to dollop more peanut butter and marshmallow fluff, then swirl again. This layering is what makes the Fluffernutter Brownies Recipe so special and deliciously gooey.
Step 7: Bake Until Perfect
Pop the pan into the oven and bake for 28 to 32 minutes. You want to see a few moist crumbs clinging to a toothpick inserted in the center—that’s the sweet spot for fudgy brownies with gorgeous melt-in-your-mouth texture.
Step 8: Cool and Slice
Let the brownies cool completely in the pan before slicing. This cooling time helps the swirls set beautifully and prevents the gooey marshmallow and peanut butter from spreading too thin.
How to Serve Fluffernutter Brownies Recipe
Garnishes
Sprinkle a light dusting of powdered sugar right before serving to add a delicate sweetness and pretty contrast. If you’re feeling fancy, a few chopped roasted peanuts on top bring delightful crunch and nuttiness that plays wonderfully with the soft marshmallow swirls.
Side Dishes
Serve these brownies alongside a scoop of vanilla or chocolate ice cream for an indulgent dessert experience that balances warm, melty brownie bites with cool creaminess. A glass of cold milk or a bold cup of coffee also pairs beautifully, cutting through the sweetness and making every bite shine.
Creative Ways to Present
For parties or gifts, cut these brownies into bite-sized squares and arrange them on a decorative platter with colorful paper liners. You could also skew a brownie cube with fresh strawberries or banana slices for a fun, interactive snack that everyone will rave about. These little touches turn the Fluffernutter Brownies Recipe into an unforgettable treat.
Make Ahead and Storage
Storing Leftovers
Keep your leftover brownies in an airtight container at room temperature for up to 3 days. This keeps them tender and moist, with that perfect balance of fudginess and swirl texture just like fresh-baked.
Freezing
If you want to save brownies for longer, wrap individual pieces tightly in plastic wrap and place them in a freezer-safe container or bag. They freeze beautifully for up to 3 months without losing that peanut butter and marshmallow goodness.
Reheating
To enjoy your brownies warm, thaw frozen pieces at room temperature, then microwave for 15 to 20 seconds. The heat will revive that melty, gooey goodness, making each bite feel freshly baked and incredibly comforting.
FAQs
Can I use crunchy peanut butter instead of creamy?
Absolutely! Crunchy peanut butter adds a delightful texture contrast to the soft marshmallow swirls, creating an extra nutty bite if that’s your style.
Is it okay to substitute marshmallow fluff with mini marshmallows?
You can use mini marshmallows, but keep in mind they will melt differently. Fluff maintains a creamy, spreadable texture that’s ideal for swirling, while marshmallows might create pockets of melted goo.
Can I make these brownies gluten-free?
Yes, swap the all-purpose flour for a gluten-free baking blend that’s designed for brownies. The texture might be slightly different, but the flavor and fun swirls will remain fantastic.
Do I have to add chocolate chips?
The chocolate chips are optional, but they do add an extra layer of melty chocolate surprise inside. Feel free to leave them out if you prefer your brownie purely with peanut butter and marshmallow flavors.
How do I know when the brownies are done baking?
Insert a toothpick in the center after 28 minutes; a few moist crumbs sticking to it means the brownies are perfectly fudgy. If the toothpick comes out wet with batter, give them another few minutes.
Final Thoughts
There is something truly magical about this Fluffernutter Brownies Recipe that makes it an instant favorite for anyone who loves a playful, nostalgic treat with a grown-up twist. From the simple ingredients to the beautiful swirls of marshmallow and peanut butter, it’s a dessert that feels like a warm hug on a plate. Don’t hesitate — bake a batch today, and prepare for happy smiles all around!
Print
Fluffernutter Brownies Recipe
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 16 brownies
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
Indulge in these rich and gooey Fluffernutter Brownies, a delightful twist on classic brownies with swirls of creamy peanut butter and marshmallow fluff. Perfectly fudgy with a hint of chocolate, these brownies combine the nostalgic flavors of a fluffernutter sandwich in a decadent baked treat.
Ingredients
Brownie Batter
- 1 cup unsalted butter
- 1 cup granulated sugar
- 1 cup brown sugar
- 3 large eggs
- 2 teaspoons vanilla extract
- 1 cup all-purpose flour
- 1 cup unsweetened cocoa powder
- 1/2 teaspoon salt
Swirl Mixture
- 3/4 cup marshmallow fluff
- 3/4 cup creamy peanut butter
- 1/2 cup chocolate chips or chunks (optional)
Instructions
- Preheat and Prepare Pan: Preheat your oven to 350°F (175°C) and line an 8×8-inch baking pan with parchment paper to prevent sticking and ensure easy removal of the brownies.
- Melt Butter: Melt the butter using a saucepan over low heat or in a microwave-safe bowl, then let it cool slightly to avoid cooking the eggs later.
- Mix Sugars: Whisk the granulated sugar and brown sugar into the melted butter until the mixture is smooth and combined.
- Add Eggs and Vanilla: Beat in the eggs and vanilla extract to the butter and sugar mixture until the batter is glossy and slightly thickened.
- Add Dry Ingredients: Gently stir in the cocoa powder, all-purpose flour, and salt until just combined. Avoid overmixing for fudgy texture.
- Layer Batter: Pour half of the brownie batter into the prepared baking pan, spreading evenly.
- Add Swirls: Drop spoonfuls of creamy peanut butter and marshmallow fluff on top of the batter layer.
- Swirl Mixture: Using a knife or skewer, gently swirl the peanut butter and marshmallow fluff into the brownie batter for a marbled effect.
- Top with Batter: Pour the remaining brownie batter over the swirled layer and repeat the swirling process with additional peanut butter and fluff if desired.
- Bake: Place the pan in the oven and bake for 28 to 32 minutes. Check for doneness by inserting a toothpick in the center—it should come out with a few moist crumbs, indicating fudgy brownies.
- Cool: Allow the brownies to cool completely in the pan to set before slicing into 16 squares for serving.
Notes
- For best results, do not overmix the batter once the dry ingredients are added to maintain a fudgy texture.
- Use parchment paper to line the pan for easy removal and clean-up.
- You can add chocolate chips or chunks into the batter or sprinkle on top for extra chocolate goodness.
- If you prefer a stronger peanut butter flavor, increase the peanut butter swirl quantity slightly.
- Store brownies in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.
