Decadent Fluffernutter Fudge

If you adore the classic combination of peanut butter and marshmallow, prepare to meet your new favorite dessert. This four-ingredient peanut butter fudge comes together remarkably fast, with much of the process happening conveniently in your microwave. Unlike some fudge recipes that incorporate marshmallow fluff directly into the base, our version pays a delicious homage to the beloved fluffernutter sandwich. Here, the airy marshmallow fluff is artfully swirled into the top layer, creating a distinct and delightful marshmallow flavor and an incredibly appealing texture contrast.

Each bite delivers a symphony of flavors and textures: soft, chewy fudge bursting with rich peanut butter, complemented by the sweet, pillowy marshmallow fluff. The addition of crunchy roasted peanuts is arguably the best part, providing a welcome textural break and helping to cut through the sweetness of the fudge. This simple, no-bake recipe is not only a joy to make but also makes a fantastic homemade gift. It pairs beautifully with other delightful treats like Biscoff Fudge or Toasted Marshmallow Rice Krispie Treats, making it perfect for holiday platters or special occasions.

Can’t get enough fluffernutter goodness? Be sure to try our famous Fluffernutter Cookies – they are consistently one of the most popular recipes on our site and a crowd favorite!

Why This No-Bake Fluffernutter Fudge Is a Must-Try

In the world of homemade confections, fudge can sometimes feel intimidating, especially traditional recipes that demand a candy thermometer and precise sugar cooking. Our fluffernutter fudge recipe eliminates all the guesswork and complexity, making it truly foolproof. Here’s why this no-bake approach stands out:

• Simplicity at its Best: With only four main ingredients, you won’t need a lengthy shopping list or advanced culinary skills.
• No Candy Thermometer Needed: Forget about critical temperature checks and the fear of crystallization. This recipe ensures a smooth, creamy texture every time without the need for specialized equipment.
• Quick Preparation: From start to finish, including chilling time, you can have this delectable fudge ready in under an hour. It’s perfect for last-minute dessert cravings or unexpected guests.
• Consistent Results: Because it doesn’t involve boiling sugar, this fudge won’t get grainy or dry out easily. It stays wonderfully soft and chewy, maintaining its irresistible appeal for days.
• Microwave Friendly: A significant portion of the cooking involves simple microwave melting, reducing cleanup and active cooking time. For those who prefer, a double boiler method is also a great alternative.

Whether you’re a novice baker or a seasoned pro looking for a quick and impressive dessert, this peanut butter marshmallow fluff fudge is an absolute winner. Its unique flavor profile and delightful texture make it a standout treat that everyone will adore.

Essential Ingredient Notes for Perfect Fluffernutter Fudge

The beauty of this no-bake peanut butter marshmallow fudge lies in its simplicity and the quality of its few key ingredients. You’ll notice this version intentionally omits corn syrup, milk, and powdered sugar, which are common in many traditional fudge recipes. This choice helps prevent graininess and excessive drying, ensuring your fudge remains wonderfully smooth and creamy.

Here’s a breakdown of what you’ll need and why each ingredient is crucial for achieving the perfect texture and flavor:

• White Chocolate: This forms the foundational structure and sweetness of our fudge. For the best melting consistency and superior flavor, we highly recommend using high-quality chopped white chocolate bars or blocks. While white chocolate chips can be used, be aware that they often contain stabilizers that prevent them from melting as smoothly as bars. In my experience, even with chips, the fudge turns out beautifully, but for a truly silky texture, bars are preferred.
• Creamy Peanut Butter: The star flavor of this fluffernutter fudge! It is absolutely essential to use creamy, shelf-stable peanut butter (like Jif or Skippy) for this recipe, NOT natural peanut butter. Natural peanut butter, with its separated oils, will alter the fudge’s consistency, making it greasy and difficult to set properly. The emulsifiers in conventional creamy peanut butter are key to the fudge’s smooth, firm texture.
• Sweetened Condensed Milk: This magical ingredient is the binder and primary sweetener for our no-bake fudge. One 14-ounce can provides the necessary moisture and thickness, creating that characteristic rich, dense fudge texture without any cooking or candy-making expertise. Do not confuse it with evaporated milk, as they are very different!
• Marshmallow Fluff: The “fluff” in fluffernutter! About 6-7 ounces of marshmallow fluff (also known as marshmallow creme) is needed to create the signature sweet, airy swirls on top of the fudge. This adds a delightful chewiness and distinct marshmallow flavor that sets this fudge apart.
• Optional Toppings: Elevate your fudge with these simple additions:
  • Extra Peanut Butter: A small amount of melted creamy peanut butter drizzled on top before swirling enhances the peanut flavor and creates beautiful visual appeal.
  • Roasted Peanuts: Roughly chopped roasted peanuts scattered over the top provide an essential crunch and a lovely nutty flavor, contrasting the smooth fudge.
  • Flaky Sea Salt: A delicate sprinkle of flaky sea salt is a game-changer. It expertly balances the sweetness of the fudge and marshmallow, awakening the flavors and adding a sophisticated touch.

How to Make Fluffernutter Fudge: A Simple Guide

Making this luscious peanut butter marshmallow fluff fudge is incredibly straightforward, even for beginner bakers. Follow these detailed steps to ensure your fudge turns out perfectly every time.

Before You Begin: Prepare an 8×8-inch baking pan by lining it with parchment paper slings. This means letting the parchment paper extend over the sides of the pan, creating “handles” that will allow you to easily lift the entire block of fudge out once it’s set. This simple trick makes slicing your fudge much cleaner and easier than cutting it directly in the pan.

STEP 1: Melt the White Chocolate and Peanut Butter.

In a large, microwave-safe bowl, combine your chopped white chocolate (or chips) and creamy peanut butter. Microwave the mixture in 30-second intervals, stirring thoroughly after each burst. Continue this process until the mixture is completely smooth and melted, with no lumps remaining. Be careful not to overheat the chocolate, as it can seize. Alternatively, for a more controlled melt, you can use a double boiler over simmering water, stirring constantly until smooth.

STEP 2: Incorporate the Sweetened Condensed Milk.

Pour the entire can of sweetened condensed milk into the melted peanut butter and white chocolate mixture. Stir vigorously until all ingredients are well combined. You’ll notice the fudge mixture will start to thicken quite rapidly as you stir. Once it reaches a cohesive, thick consistency, transfer it immediately into your prepared 8×8-inch baking pan. Use a rubber spatula to spread and flatten the fudge evenly across the bottom of the pan, pushing it gently towards the edges.

STEP 3: Swirl in the Marshmallow Fluff.

Dollop the marshmallow fluff over the surface of the peanut butter fudge. Using a knife, skewer, or the back of a spoon, gently swirl the fluff into the fudge, pushing it towards the edges of the pan. Don’t worry if this step doesn’t look perfectly aesthetic at first; the final decorative touches will come later. The goal here is to integrate the marshmallow into the fudge base, creating those lovely, soft pockets of fluff.

STEP 4: Add Peanut Butter Drizzle and Swirl.

Melt a small amount of extra creamy peanut butter until it’s pourable (a few seconds in the microwave should do it). Drizzle this melted peanut butter artfully over the marshmallow fluff swirls. Then, take a chopstick, skewer, or even a toothpick and gently drag it through the drizzled peanut butter and fluff, creating beautiful, intricate swirls and patterns that add to the fudge’s visual appeal.

STEP 5: Top and Set.

Generously sprinkle the top of the fudge with roasted peanuts and a delicate pinch of flaky sea salt. The salt will enhance the flavors and balance the sweetness perfectly. Once topped, place the pan in the refrigerator for at least 30 minutes (or until firm). This chilling time is crucial for the fudge to set properly, ensuring it holds its shape when cut.

STEP 6: Slice and Serve.

Once the fudge is completely set, use the parchment paper slings to carefully lift the entire block of fudge out of the pan and onto a cutting board. With a sharp knife, cut the fudge into 16 even pieces. Now it’s ready to be devoured!

Storing and Freezing Your Fluffernutter Fudge

Proper storage ensures your delicious fluffernutter fudge stays fresh and delightful for as long as possible.

Storage Instructions:

Once cut, store the fudge tightly covered in an airtight container in the refrigerator for up to one week. For the best flavor and texture, allow the fudge to come to room temperature for about 30 minutes before serving. This softens it slightly and enhances its creamy consistency.

Freezing Instructions:

To extend the shelf life of your fudge, it freezes beautifully. First, wrap individual pieces or the entire block tightly in plastic wrap, ensuring no air is exposed. Then, wrap it again in a layer of aluminum foil. Place the wrapped fudge into a freezer-safe zip-top bag, pressing out as much air as possible before sealing. It can be stored in the freezer for up to one month.

To thaw, simply remove the fudge from the freezer, unwrap it completely, and let it stand at room temperature until it softens to your desired consistency. Avoid thawing in the microwave, as it can alter the texture.

If you’re using white chocolate chips instead of chopped bars, you might encounter some difficulty achieving a perfectly smooth melt. White chocolate chips often contain anti-melting agents designed to help them hold their shape during baking. If some pieces remain stubborn and don’t completely melt, a simple solution is to strain the mixture through a fine-mesh sieve into another bowl. This will remove any unmelted chunks, allowing you to continue with the recipe for smooth, creamy fudge.

This specific no-bake method is designed to prevent dry and crumbly fudge, so if made correctly, it should be delightfully soft and smooth initially. However, fudge can naturally start to dry out over time, especially if not stored in an airtight container. By the end of its one-week storage in the fridge, you might notice a slight change in texture, becoming a bit firmer. Ensure it’s always tightly covered to retain moisture.

No, it is highly recommended to use creamy, processed peanut butter (like Jif, Skippy, or Peter Pan) for this recipe. Natural peanut butter, which often separates into oil and solids, has a different consistency and fat content that can cause the fudge to become greasy and prevent it from setting properly. The emulsifiers in conventional creamy peanut butter are key to achieving the desired smooth and firm fudge texture.

While this recipe specifically calls for white chocolate to achieve the classic fluffernutter flavor profile, you could experiment with other chocolates. However, keep in mind that using milk chocolate or semi-sweet chocolate will significantly change the flavor and sweetness balance. The amount of sweetened condensed milk might also need adjustment to account for the different cocoa solids and sugar content in darker chocolates. For the authentic fluffernutter experience, stick with white chocolate.

Seizing typically occurs when chocolate comes into contact with even a tiny amount of water or is overheated. To prevent this, ensure your bowl and utensils are completely dry. If microwaving, use short 30-second bursts and stir diligently in between each, as stirring helps distribute heat and prevents hot spots. For a double boiler, make sure the bottom of your bowl doesn’t touch the simmering water, and use gentle heat.

Peanut Butter Marshmallow Fluff Fudge (Fluffernutter Fudge)

By Callan Wenner

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  12 oz white chocolate chopped bars or chips
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  1½ cups creamy peanut butter 400g, not natural
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  14 oz sweetened condensed milk 1 can
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  6-7 oz marshmallow fluff
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  ¼ cup creamy peanut butter melted, for topping (80g)
• ▢
  ⅓ cup roasted shelled peanuts for topping, chopped
• ▢
  flaky sea salt for topping

• Line an 8×8 inch baking pan with parchment paper, creating slings for easy removal, and set aside.
• In a large microwaveable bowl, combine the white chocolate and creamy peanut butter. Microwave in 30-second bursts, stirring well after each, until the mixture is completely melted and smooth.
• Add the sweetened condensed milk and stir vigorously until fully combined. The fudge will thicken quickly. Transfer this mixture to the prepared baking pan and press it down and out evenly to cover the base.
• Dollop the marshmallow fluff over the fudge. Using a knife or skewer, gently swirl the fluff into the fudge, pushing it towards the edges of the pan to create a marbled effect.
• Drizzle the melted peanut butter over the top of the marshmallow fluff. Use a chopstick or toothpick to create artistic swirls, blending the melted peanut butter into the fluff.
• Generously top the fudge mixture with chopped roasted peanuts and a sprinkle of flaky sea salt for added crunch and balanced flavor.
• Allow the fudge to set in the fridge for at least 30 minutes, or until firm. Once set, use the parchment paper slings to remove the fudge from the pan, then cut into 16 even pieces and serve.

While white chocolate chips can be used, chopped white chocolate bars typically melt more smoothly and offer a superior flavor. If using chips, be prepared that they may not melt entirely, and straining might be necessary.

As an alternative to the microwave, you can melt the peanut butter and white chocolate together over a double boiler for a more gradual and controlled melting process.

The fudge mixture will be quite thick after adding the condensed milk. Don’t be discouraged if the initial marshmallow fluff swirling doesn’t look perfect – the aesthetic appeal comes together beautifully with the final peanut butter drizzle and toppings.

The provided nutritional information is an estimate per serving. Accuracy is not guaranteed.