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This Peanut Butter Fudge Recipe is rich, creamy, and unbelievably easy to make with just 4 simple ingredients. Unlike traditional fudge recipes that require candy thermometers and careful temperature monitoring, this foolproof version comes together in the microwave in just minutes. The result is smooth, melt-in-your-mouth peanut butter fudge that’s perfect for holiday cookie trays, homemade gift boxes, and satisfying sweet cravings any time of year.

If you love easy homemade fudge recipes, be sure to try my Easy Fudge Recipe, Microwave Fudge, and Tiger Butter Fudge. For even more festive sweets, browse my Christmas Desserts collection for dozens of holiday favorites.

Whether you’re making a batch for Christmas, a cookie exchange, or just because you’re craving something sweet, this easy peanut butter fudge is always a crowd-pleaser.

Why This Peanut Butter Fudge Recipe Works

✔ Only 4 simple ingredients: You probably already have everything you need in your pantry, making this an easy last-minute dessert or holiday candy.

✔ No candy thermometer required: Unlike traditional fudge recipes, this microwave method skips the guesswork and delivers reliable results every time.

✔ Rich and creamy texture: Powdered sugar blends smoothly with the peanut butter and butter, creating fudge that’s silky, smooth, and never grainy.

✔ Ready in minutes: The active prep time is incredibly short, making this one of the easiest homemade candy recipes you’ll ever make.

✔ Perfect for gifting: This peanut butter fudge travels well and looks beautiful on holiday cookie trays, dessert platters, and homemade gift boxes.

✔ Classic peanut butter flavor: Rich, sweet, and packed with peanut butter goodness, it’s the kind of old-fashioned treat everyone reaches for first.

✨ Before You Begin

✨ Choose the right peanut butter: Use a traditional creamy peanut butter such as Jif or Skippy for the smoothest texture and most reliable results. Natural peanut butter can separate and may affect how well the fudge sets.

✨ Prepare your pan first: Line your pan and spray the foil before you start mixing. Once the fudge is ready, you’ll want to spread it into the pan immediately.

✨ Vent the plastic wrap: Poking a few holes in the plastic wrap allows steam to escape during microwaving and helps the mixture heat more evenly.

✨ Work quickly: After adding the powdered sugar, the fudge will begin to thicken as it cools. Stir until combined, then transfer it to the prepared pan right away.

✨ Don’t overmix: Mix just until the fudge loses its shine and looks thick and smooth. Overbeating can lead to dry or crumbly fudge.

✨ Let it soften before slicing: For the cleanest cuts, allow the chilled fudge to sit at room temperature for 10 to 15 minutes before cutting into squares.

Ingredients + Key Notes

Butter: You’ll need 8 ounces (2 sticks) butter. Butter gives this fudge its rich, melt-in-your-mouth texture and helps create the smooth consistency that makes this recipe so irresistible.

Peanut Butter: Use 1 cup creamy peanut butter for the best results. Traditional brands like Jif or Skippy work especially well because they have a consistent texture. Natural peanut butter can separate and may prevent the fudge from setting properly.

Vanilla Extract: Just 1 teaspoon vanilla extract enhances the peanut butter flavor and adds warmth and depth to the finished fudge.

Powdered Sugar: This recipe uses 1 pound powdered sugar instead of granulated sugar, which is one of the secrets to its creamy texture. Powdered sugar blends smoothly into the warm peanut butter mixture without requiring a candy thermometer or complicated cooking steps.

Optional Variations

Crunchy Peanut Butter: Swap creamy peanut butter for crunchy if you’d like a little texture in every bite.
Chocolate Drizzle: Melt a handful of chocolate chips and drizzle them over the top before chilling for a peanut butter cup-inspired treat.
Sea Salt Finish: A light sprinkle of flaky sea salt adds a delicious sweet-and-salty contrast.
Holiday Sprinkles: Add festive sprinkles before chilling to dress up the fudge for Christmas cookie trays and gift boxes.

🥣 How To Make Peanut Butter Fudge

Prepare the pan: Line an 8×8-inch baking pan with aluminum foil, allowing the foil to overhang the sides by about 2 inches. Spray the foil lightly with nonstick cooking spray. This makes it easy to lift the fudge out of the pan once it’s set.

Melt the butter and peanut butter: Add the 8 ounces butter and 1 cup peanut butter to a large microwave-safe bowl. Cover with plastic wrap and poke a few small holes to vent steam. Microwave on high for 2 minutes, then carefully remove the bowl and stir until smooth. Recover and microwave for 2 minutes more.

Add the remaining ingredients: Remove the bowl from the microwave and immediately stir in the 1 teaspoon vanilla extract. Add the 1 pound powdered sugar and stir until fully combined. The mixture will become thick and lose its glossy appearance as the sugar is incorporated.

Spread into the pan: Transfer the fudge mixture to the prepared pan and use a rubber spatula to spread it into an even layer. Smooth the top as best you can before it begins to set.

Chill until firm: Cover the pan with plastic wrap and refrigerate for about 2 hours, or until the fudge is completely firm.

Slice and serve: For the cleanest cuts, let the fudge sit at room temperature for 10 to 15 minutes before slicing into squares. Lift the fudge out of the pan using the foil overhang, then cut into 64 bite-sized pieces.

⭐ Pro Tips

⭐ Use regular peanut butter: Traditional creamy peanut butter, such as Jif or Skippy, produces the smoothest, creamiest fudge. Natural peanut butter can separate and may affect the texture and consistency.

⭐ Measure carefully: Because this recipe uses only a handful of ingredients, accurate measurements are important. Too much powdered sugar can make the fudge dry, while too little may prevent it from setting properly.

⭐ Have everything ready: Once the peanut butter mixture is heated, you’ll want to work quickly. Make sure your pan is prepared and your ingredients are measured before you start.

⭐ Stir until just combined: Mix only until the fudge loses its shine and becomes thick and smooth. Overmixing can cause the fudge to become crumbly or dry.

⭐ Don’t skip the chilling time: Refrigerating the fudge allows it to firm up properly and develop the perfect sliceable texture.

Troubleshooting Peanut Butter Fudge

⭐ Fudge too crumbly? This is usually caused by overmixing after the powdered sugar is added or adding too much powdered sugar. Stir just until combined and measure ingredients carefully.

⭐ Fudge too dry? Dry fudge is often the result of overbeating the mixture as it cools. Stop mixing as soon as the ingredients are fully incorporated and the mixture becomes matte.

⭐ Fudge didn’t set? Double-check that the powdered sugar was measured correctly and that the mixture was fully mixed before being transferred to the pan. Additional chilling time can also help.

⭐ Fudge too hard? Too much powdered sugar can create a firmer texture. Be sure to measure by weight when possible for the most accurate results.

Storing + Freezing + Make-Ahead

How To Store: Store peanut butter fudge in an airtight container in the refrigerator for up to 2 weeks. For the best texture, allow it to sit at room temperature for a few minutes before serving.

How To Freeze: Peanut butter fudge freezes beautifully. Arrange the pieces in a freezer-safe container with sheets of parchment paper between layers to prevent sticking. Freeze for up to 3 months.

How To Thaw: Transfer the fudge to the refrigerator overnight or let it sit at room temperature for about 30 minutes before serving.

Make-Ahead Instructions: This is a great make-ahead holiday candy recipe. Prepare the fudge several days in advance and keep it refrigerated until you’re ready to serve it. In fact, many people think the flavor improves after a day or two as the ingredients have time to meld together.

Gifting Tips: Peanut butter fudge is perfect for holiday gift boxes, Christmas cookie trays, and homemade candy platters. Package individual pieces in festive tins or cellophane bags for an easy homemade gift that’s always appreciated.

✦ Frequently Asked Questions

◆ Can I freeze peanut butter fudge?

Yes! Peanut butter fudge freezes very well for up to 3 months. Store it in an airtight container with parchment paper between layers to prevent sticking. Thaw overnight in the refrigerator before serving.

◆ How long does peanut butter fudge last?

When stored in an airtight container in the refrigerator, peanut butter fudge will stay fresh for up to 2 weeks. It can also be frozen for longer storage.

◆ Can I use crunchy peanut butter?

Absolutely. Crunchy peanut butter works well in this recipe and adds a little texture to each bite. The fudge may not be quite as smooth, but it will still be delicious.

◆ Can I make peanut butter fudge with granulated sugar?

This recipe is specifically designed to use powdered sugar, which creates a smooth, creamy texture without requiring a candy thermometer. Granulated sugar recipes typically require cooking a sugar syrup to a specific temperature.

◆ Why is my peanut butter fudge crumbly?

Crumbly fudge is usually caused by overmixing the mixture after the powdered sugar is added or by using too much powdered sugar. Stir just until combined and measure carefully for the best texture.

◆ Why is my peanut butter fudge dry?

Dry fudge is often the result of overbeating as the mixture cools. Mix only until the ingredients are incorporated and the fudge loses its glossy appearance.

Still have questions? Drop them in the comments — I love helping you bake + cook with confidence! 💗

More Homemade Candy Recipes

3 Ingredient Fudge – The easiest homemade fudge you’ll ever make with just three simple ingredients.

Crockpot Candy – Rich chocolate candy made right in your slow cooker with almost no effort.

Peanut Brittle – A buttery, crunchy classic that’s always a favorite during the holidays.

Christmas Crack – Sweet, salty, crispy, and completely addictive holiday candy.

Polar Bear Paws – Chocolate-covered peanut butter candies loaded with peanuts and perfect for holiday gifting.

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