Classic Peanut Butter Fudge Recipe

This peanut butter fudge is a simple, old-fashioned sweet: smooth, creamy, and richly peanutty with a melt-in-your-mouth texture. It’s worth making when you want a quick, satisfying candy that uses pantry staples and cuts into neat squares for sharing or snacking.

It’s a forgiving recipe that comes together fast—no candy thermometer required if you use the no-cook powdered sugar method—so it’s great for a last-minute treat or a homemade gift.

Why This Classic Peanut Butter Fudge Recipe Works

1. The ratio of peanut butter to sugar gives a creamy, sliceable fudge rather than a crumbly candy.
2. A bit of butter (or sweetened condensed milk if using that variation) softens the texture and adds richness.
3. Vanilla and a pinch of salt brighten the flavor and prevent the fudge from tasting flat or overly sweet.
4. The recipe is quick and pantry-friendly—no long cooking or special equipment needed.

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Ingredients

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These are the main things you’ll need—simple pantry staples most recipes call for.

– Creamy peanut butter: Smooth gives the creamiest texture; choose one you like the taste of. Natural peanut butter can work but may need extra powdered sugar.
– Unsalted butter: Adds richness and helps the fudge set more smoothly; use salted if you prefer, but reduce added salt.
– Powdered (confectioners’) sugar: Thickens and sweetens without graininess; sift if it’s clumpy.
– Vanilla extract: A little lifts the flavor and rounds the sweetness.
– Fine sea salt or kosher salt: Balances the sweetness—use sparingly, and sprinkle a little on top if you like contrast.
– Sweetened condensed milk (optional): Use instead of some butter/powdered sugar for a slightly softer, creamier fudge that’s still easy to make.
– Chopped peanuts or flaky sea salt (optional topping): Adds texture and a nutty crunch if desired.

Substitutions and Variations

– Use crunchy peanut butter for more bite—texture will be chunkier and less smooth.
– Replace up to half the peanut butter with almond or cashew butter for a milder, nuttier flavor; texture stays similar.
– Swap some powdered sugar for sweetened condensed milk to make a softer, more ribboned fudge—chilling time may increase.
– Add a chocolate layer by melting chocolate chips with a little butter and pouring on top; this creates a two-layer candy and slightly firmer top.
– Stir in ½ cup mini chocolate chips or chopped nuts for mix-ins; they change the mouthfeel and make each square more textured.

How to Make Classic Peanut Butter Fudge Recipe

This is a short summary—see the full recipe card for exact measurements and times.

1. Line an 8×8-inch pan with parchment or foil, leaving an overhang for easy removal.
2. In a microwave-safe bowl, melt butter and peanut butter together in 20–30 second bursts, stirring until smooth. (If using condensed milk, warm it and combine with peanut butter until smooth.)
3. Stir in vanilla and a pinch of salt.
4. Gradually add sifted powdered sugar, stirring until a thick, spreadable dough forms. If using condensed milk, add less powdered sugar to reach the right consistency.
5. Transfer the mixture to the prepared pan and press evenly with a spatula. Sprinkle toppings if using.
6. Chill in the fridge until firm (at least 1–2 hours), then lift from the pan and cut into squares. Store chilled.

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Tips for the Best Results

1. Use room-temperature butter so it melts evenly with the peanut butter—no lumps.
2. Don’t rush on powdered sugar: add it gradually until you reach a thick, non-sticky dough.
3. Press the fudge firmly into the pan to avoid air pockets and get clean-cut squares.
4. Chill long enough—cutting too soon makes crumbly edges; at least 1–2 hours is best.
5. If you want ultra-smooth fudge, beat briefly with a sturdy spoon or paddle attachment after adding powdered sugar to remove small lumps.

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Common Mistakes

– Using natural peanut butter without adjusting: fix by adding a bit more powdered sugar to firm the mixture.
– Overheating the mixture: fix by microwaving in short bursts and stirring well to avoid scorching.
– Adding all the powdered sugar at once: fix by adding it gradually and stopping when the dough reaches the right stiffness.
– Cutting too early: fix by refrigerating longer so squares hold their shape.
– Pressing the top unevenly: fix by using a piece of parchment and pressing with the bottom of a measuring cup for a smooth finish.

Storage

Storing: Keep fudge in an airtight container in the refrigerator for up to 2 weeks. Separate layers with parchment to prevent sticking.

Freezing: Fudge freezes well—wrap individual squares in plastic, place in a freezer bag, and freeze up to 3 months. Thaw in the refrigerator before serving.

Reheating or serving later: Bring refrigerated fudge to room temperature for 15–30 minutes before serving so it’s softer and more flavorful.

How to Serve Classic Peanut Butter Fudge Recipe

– Serve on a small plate with coffee or tea for an afternoon treat.
– Pack squares in small gift boxes or cellophane bags for homemade gifts.
– Arrange on a dessert platter with assorted candies for parties.
– Crumble over vanilla ice cream as a rich peanut-buttery topping.

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More Helpful Notes

– If your powdered sugar is lumpy, sift it first for a smoother fudge.
– For a firmer bite, chill overnight—the flavor also mellows and improves.
– Use good-quality peanut butter—its flavor dominates the candy.
– If the fudge feels too dry while mixing, add a teaspoon of melted butter or condensed milk to bring it together.

Frequently Asked Questions

Classic Peanut Butter Fudge Recipe

Ultra-creamy, old-fashioned peanut butter fudge with a soft bite and clean edges, finished with a whisper of flaky sea salt. This small-batch method uses a thermometer for reliably smooth, melt-in-your-mouth squares.

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Prep Time: 15 minutes minutes

Cook Time: 10 minutes minutes

Total Time: 25 minutes minutes

Servings: 36

Ingredients

 

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Peanut Butter Fudge

• ▢ 1 3/4 cups granulated sugar
• ▢ 3/4 cup evaporated milk
• ▢ 5 tablespoons unsalted butter, cut into pieces
• ▢ 1 tablespoon light corn syrup
• ▢ 1 1/3 cups creamy peanut butter (no-stir, such as Jif or Skippy)
• ▢ 1 1/2 teaspoons pure vanilla extract
• ▢ 1/4 teaspoon flaky sea salt, for finishing

Instructions

Preparation Steps

• Line an 8-inch square pan with parchment, leaving overhang on two sides for easy lifting. Lightly butter or spray the paper and pan sides.
• In a small bowl, stir the peanut butter with the vanilla. Microwave on 50% power for 20–30 seconds to loosen slightly; set aside.
• Add sugar, evaporated milk, corn syrup, and butter to a heavy 3-quart saucepan. Warm over medium-low heat, stirring gently, until the sugar dissolves and the mixture looks uniform, about 3 minutes.
• Clip on a candy thermometer and raise heat to medium. Cook without stirring, swirling the pan once or twice, until the syrup reaches 234–238°F (soft-ball stage), about 6–8 minutes.
• Remove from heat and let the bubbling subside for 30–60 seconds. Add the warmed peanut butter mixture and beat briskly with a sturdy spoon for 45–90 seconds, just until the fudge turns glossy to matte and thickens slightly.
• Scrape into the prepared pan, spreading evenly. Tap the pan on the counter to release air bubbles, then sprinkle the top with the flaky sea salt. Cool at room temperature until set, about 3 hours (or cool 30 minutes, then refrigerate 30–45 minutes to speed it up).
• Lift out using the parchment overhang and cut into 36 small squares, wiping the knife with a warm, damp towel between cuts for clean edges.

Notes

Tip: If sugar crystals form on the sides of the pot while cooking, brush them down with a wet pastry brush to keep the fudge silky-smooth.

Store tightly covered at cool room temperature for up to 1 week or refrigerate up to 2 weeks. For the creamiest texture, let chilled pieces come to room temp before serving.

This recipe is an original creation inspired by classic Classic Peanut Butter Fudge Recipe flavors. All ingredient ratios and instructions are independently developed.