Peanut Butter Fudge

When I was little, peanut butter fudge was always the treat that disappeared first from the dessert table. It had a way of stealing the spotlight without even trying.

Thick, creamy, and just sweet enough, each square felt like it was made to be savored slowly.

My grandmother used to keep a tin of it hidden away, tucked in the back of the fridge, and if you were lucky, she’d slip you a piece before dinner.

That memory has stayed with me, not because of nostalgia alone, but because the taste was unforgettable.

What makes peanut butter fudge so special is the way it balances rich nuttiness with a smooth, melt-in-your-mouth texture.

It’s sturdy enough to hold its shape yet soft enough to almost feel like it’s melting as soon as it hits your tongue.

The roasted peanuts on top give it just the right bit of crunch, breaking up the creaminess in the most satisfying way.

This recipe recreates that timeless treat in the truest sense. It’s all about slowing down for a moment and letting those squares of fudge bring a little joy to your day.

Whether you set them out on a holiday platter or keep them stashed away for yourself, each bite delivers the same quiet magic that has made this sweet a favorite for generations.

Peanut Butter Fudge Recipe

Ingredients

2 cups granulated sugar
½ cup whole milk
¾ cup unsalted butter, cut into cubes
1 cup smooth peanut butter (no lumps)
1 tsp pure vanilla extract
2 cups powdered sugar, sifted
½ cup lightly roasted peanuts (optional, for garnish or texture)

Instructions

Line an 8×8-inch square baking pan with parchment paper, making sure there is a little overhang on the sides for easy removal later.

In a medium saucepan, combine the granulated sugar, milk, and butter. Place over medium heat and stir gently until the butter melts completely.
Continue cooking the mixture, stirring often, until it comes to a steady boil. Allow it to boil for 3 to 4 minutes, stirring to prevent sticking. The mixture should look smooth and slightly thickened.
Remove the saucepan from the heat and immediately stir in the peanut butter and vanilla extract. Mix until the peanut butter is fully incorporated and the mixture is silky.

Add the sifted powdered sugar gradually, stirring with a wooden spoon or silicone spatula. The fudge mixture will start to thicken quickly. Make sure no lumps of sugar remain.
Pour the mixture into the prepared pan and spread evenly with a spatula. If using peanuts, sprinkle them over the top or press a few gently into the fudge for extra crunch.
Let the fudge sit at room temperature for about 30 minutes to start setting, then transfer the pan to the refrigerator. Chill for at least 2 hours until firm.

Once set, lift the fudge out of the pan using the parchment overhang. Place it on a cutting board and slice into small squares with a sharp knife.

What Makes Peanut Butter Fudge So Special?

Peanut butter fudge is not just another sweet treat, it’s the kind of dessert that feels both nostalgic and satisfying. Its creamy, melt-in-your-mouth texture with a touch of nutty crunch sets it apart from other fudges.

People love it because it’s rich, smooth, and full of flavor, and at the same time, it’s sturdy enough to cut into neat little squares that hold their shape.

Can I Use Crunchy Peanut Butter Instead Of Smooth?

Yes, but the texture will be different. Smooth peanut butter creates the classic creamy consistency that makes fudge so silky.

If you prefer small nutty bits throughout, you can swap with crunchy peanut butter. Some people even like mixing half smooth and half crunchy for a balance of creaminess and crunch.

How Do I Know When The Sugar Mixture Is Ready?

The stage of cooking the sugar, milk, and butter mixture is very important for peanut butter fudge. You’ll know it’s ready when it reaches a steady boil and stays bubbling for 3 to 4 minutes while stirring.

The mixture should look slightly thickened and smooth. Overcooking can make the fudge dry and crumbly, while undercooking can make it too soft to set.

Can I Add Extra Toppings To Peanut Butter Fudge?

Toppings can make the fudge even more interesting to eat. Here are some popular add-ons that work well:

Chopped peanuts: Adds crunch and enhances the nutty flavor.
Chocolate drizzle: A thin layer of melted chocolate on top balances the sweetness.

Sea salt flakes: Gives a slight salty touch that cuts through the richness.
Caramel swirls: For a more indulgent, gooey bite.

Adding toppings doesn’t change the base recipe but can create a more customized experience.

Why Did My Peanut Butter Fudge Turn Out Grainy?

Graininess happens when sugar crystals form in the mixture. To avoid this, stir continuously while the sugar, butter, and milk are cooking, making sure the sugar dissolves completely.

Also, sifting the powdered sugar before mixing helps keep the texture smooth. A good stir when adding powdered sugar is key—stop once everything is combined to prevent overworking it.

Can Peanut Butter Fudge Be Made Ahead Of Time?

Yes, peanut butter fudge is one of the best make-ahead desserts. You can prepare it a few days before an event, and it will still taste fresh and creamy.

It actually benefits from resting a day or two, as the flavors deepen while it sits. Just be sure to store it properly so it keeps its smooth texture.

How Should I Store Peanut Butter Fudge?

Storing peanut butter fudge the right way ensures it stays soft and flavorful for longer.

At room temperature: Store in an airtight container for up to 5 days. Keep it in a cool, dry place away from direct sunlight.
In the refrigerator: Place in an airtight container or wrap tightly in parchment paper and refrigerate for up to 2 weeks. This is great if you live in a warmer climate.

In the freezer: For long-term storage, wrap individual squares in wax paper, then place them in a freezer-safe bag or container. They can last up to 3 months. Always thaw slowly in the fridge overnight before serving.

Can I Make Peanut Butter Fudge Without A Thermometer?

Yes, a thermometer is not required for this recipe. Since the cooking time is short and clear (around 3 to 4 minutes of steady boiling), you can follow visual cues instead.

The mixture should look smooth, shiny, and slightly thick before removing it from the heat. Trusting the timing and consistency will give you good results.

Is Peanut Butter Fudge Suitable For Gifting?

Peanut butter fudge makes a wonderful homemade gift. It cuts cleanly into neat squares, holds its shape well, and packs beautifully in small boxes or tins.

If you’re gifting it, wrap the pieces in parchment paper or small candy wrappers to keep them fresh and separate. Stored properly, it will stay delicious long enough to be enjoyed by the recipient.

Tips For Perfect Peanut Butter Fudge

Peanut butter fudge may look simple, but small details make all the difference between fudge that melts smoothly in your mouth and fudge that turns out dry or crumbly. Here are expert-level tips that will help you get it right every single time:

Use fresh peanut butter: Old or dry peanut butter can make the fudge less creamy. Freshly opened jars work best because the oils are still well balanced.
Measure powdered sugar correctly: Always sift and level the powdered sugar before adding. Extra sugar makes the fudge stiff, while too little can leave it too soft to hold shape.
Boil long enough but not too long: The sugar, butter, and milk mixture should boil steadily for about 3 to 4 minutes. Less time means it won’t set properly, more time will dry it out.

Stir at the right moments: Stir constantly while the mixture is cooking to prevent sugar crystals, but once the powdered sugar is added, stir only until combined. Over-stirring at the end can make the fudge grainy.
Line the pan well: Always use parchment paper with a bit of overhang. This makes it easy to lift the fudge out cleanly and cut it into neat squares.
Cut with a sharp knife: For smooth edges, dip the knife in hot water, wipe it dry, and then slice. Repeat for each cut to keep the pieces looking professional.

Don’t rush the cooling time: Let the fudge set fully in the fridge for at least 2 hours before cutting. Cutting too early will leave you with sticky edges and uneven pieces.
Keep portions small: Peanut butter fudge is rich, so bite-sized squares are the ideal serving size. They look elegant on a platter and make the fudge last longer.

Common Mistakes To Avoid When Making Peanut Butter Fudge

Even though peanut butter fudge is straightforward, a few small mistakes can ruin the texture or flavor. Keeping these points in mind will save you from disappointment and help you achieve smooth, creamy results every time.

Using natural peanut butter: Natural varieties often separate and contain too much oil, which can stop the fudge from setting properly. Stick to regular creamy peanut butter for best results.
Skipping the sifting step: Adding powdered sugar without sifting leads to lumps that are hard to dissolve, leaving gritty bits in your fudge.
Cooking on high heat: Turning the stove too high can scorch the sugar and butter quickly, giving the fudge a burnt taste. Medium heat with steady boiling is the safest option.

Not stirring enough during boiling: Sugar needs to dissolve fully, and stirring prevents crystals from forming. Without this step, you may end up with a grainy texture.
Over-stirring after adding sugar: Once the powdered sugar is in, mix until just combined. Over-mixing at this stage makes the fudge dry and crumbly instead of silky smooth.
Cutting too early: If you slice the fudge before it has chilled and set, you’ll get sticky, messy pieces. Always wait at least 2 hours in the fridge before cutting.

Improper storage: Leaving fudge uncovered will cause it to dry out and lose its creamy bite. Airtight containers are a must, no matter where you store it.