Peanut Butter Fudge with Condensed Milk

Easy Homemade Peanut Butter Fudge

That satisfying snap when you cut through a chilled square is what makes this a winner. You don't need a candy thermometer to get a professional set. Most people think you have to boil sugar to the "soft ball" stage, but the condensed milk does that heavy lifting for you.

The goal is a dense, creamy square that doesn't crumble when you bite into it. This method ensures you get a classic Peanut Butter Fudge texture that holds its shape at room temperature.

It's a great option when you want a gourmet result but don't have hours to stand over a boiling pot. You'll get a rich, cohesive treat that tastes like it came from a specialty shop, and making a Peanut Butter Fudge this way is essentially impossible to mess up if you follow the weights.

The Logic Behind the Texture

• Condensed Milk: This ingredient is already reduced, meaning the sugar is stable and won't crystallize into grains.
• Gradual Sugar: Adding powdered sugar slowly allows you to hit the exact point where the fudge is pliable but not sticky.
• Brief Heat: Warming the fats prevents lumps, ensuring the final result is silky and smooth.

Honestly, the quick-set method is the way to go. You avoid the stress of precise temperature windows.

The Technical Specs

For this recipe, precision is everything. Use a digital scale for the sugar and peanut butter to ensure the ratio of fat to stabilizer is correct.

Precision Checkpoints:

1. Sifted Sugar: Exactly 360g of powdered sugar must be sifted to avoid tiny white clumps.
2. Initial Heat: 30 seconds in the microwave is the sweet spot to soften the butter without separating the oils.
3. The Set: 2 hours of refrigeration is mandatory. Don't cut it early or the edges will slump.

Essential Component Roles

I recommend using a standard commercial brand of peanut butter. Natural styles that separate often make the fudge feel greasy because the oil doesn't emulsify as well.

The Ingredients

• 1 cup (256 g) standard creamy peanut butter
• ½ cup (113 g) unsalted butter, softened
• 1 can (14 oz / 396 g) sweetened condensed milk
• 1 tsp (5 ml) pure vanilla extract
• ¼ tsp (1.5 g) fine salt
• 3 cups (360 g) powdered sugar, sifted Why this? Sifting prevents lumps in the dense base
• up to ½ cup (60 g) powdered sugar, added only if needed

Tools For Success

You only need a few things. A microwave-safe glass bowl is best because it distributes heat evenly. A sturdy silicone spatula helps you press the fudge into the corners of the pan without leaving air pockets.

Putting It Together

Phase 1: Prep the Pan and Sugar

Line an 8x8-inch (20 cm) pan with parchment paper, leaving a 2 inch overhang on two sides. These act as handles later. Sift the 3 cups (360 g) powdered sugar into a separate bowl.

Phase 2: Build the Base

Place the butter and peanut butter in a microwave-safe bowl. Microwave for 30 seconds, then stir. Heat for 15 to 30 seconds more if needed, until warm and smooth with no cold lumps.

Stir in the condensed milk, vanilla, and salt. Mix until glossy and uniform, with no streaks of butter or peanut butter.

Add the sifted powdered sugar about 1 cup at a time. Stir each addition completely before adding more. Stop when the dough is thick and holds its shape when lifted with the spatula. If it's still soft and sticky, add up to ½ cup (60 g) more sugar, 2 tablespoons (15 g) at a time.

Phase 3: Set, Then Slice

Press the fudge evenly into the prepared pan. Smooth the top with a greased spatula or oiled fingertips until it looks satin-like.

Refrigerate for 2 hours, until firm and no longer tacky when touched.

Lift the fudge out using the parchment overhangs. Warm a knife under hot water, wipe it dry, and cut into 5 rows by 5 rows for 25 pieces. Wipe and warm the knife between cuts for clean edges.

Chef: Warming the knife is the only way to get those sharp, gourmet corners. Cold fudge resists the blade and can crack if you force it.

Fixing Common Issues

If the fudge feels too soft, it usually comes down to the sugar ratio or the temperature of your kitchen. If you're working in a very humid environment, you will likely need that extra half-cup of powdered sugar to get a clean slice.

Texture Problems

Grainy fudge happens when sugar isn't sifted. If you see white specks, you can't fix it after it's set, so always sift first.

Setting Issues

When the fudge stays tacky, it's usually a timing issue. Give it an extra 30 minutes in the fridge.

If you're looking for more tips on confectionery textures, The Kitchn has great resources on candy basics.

Serving Suggestions

For the best experience, take the squares out of the fridge 10 minutes before eating. This allows the fats to soften slightly, making the flavor more intense. I like to pair these with a cup of black coffee to balance the sweetness.

Keeping It Fresh

Store the Peanut Butter Fudge in a sealed container; it will keep in the fridge for as long as 2 weeks. Separate the layers with parchment paper to prevent sticking.

This treat freezes beautifully. Wrap each square in plastic wrap and store them in the freezer for a maximum of 3 months. Let them thaw in the refrigerator overnight before serving.

Twists and Swaps

Feel free to customize the flavors of this recipe without affecting the set.

• Chocolate Swirl: Melt 4 oz of dark chocolate and drizzle it across the top before refrigerating, then swirl it with a toothpick.
• Salted Crunch: Fold in ½ cup of roasted salted peanuts for added texture.
• gluten-free: Provided your peanut butter is certified, this Peanut Butter Fudge is naturally gluten-free.

For a firmer consistency, add 2 more tablespoons of powdered sugar. For a softer, truffle-like feel, use slightly less powdered sugar and keep the fudge strictly chilled.