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Peanut Butter Fudge

Smooth and creamy peanut butter fudge squares stacked on a white plate with a soft background.

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This smooth and creamy peanut butter fudge is a no-bake, foolproof dessert made with just 4 ingredients in under 5 minutes. Perfect for holidays or a quick treat, it delivers rich peanut flavor and a melt-in-your-mouth texture.

  • Author: Catherine
  • Prep Time: 2 minutes
  • Cook Time: 3 minutes
  • Total Time: 4 hours 5 minutes
  • Yield: 64 1-inch pieces
  • Category: Dessert
  • Method: No-Bake, Microwave
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • 1 cup unsalted butter (2 sticks or 227g)
  • 1 cup creamy peanut butter (260g)
  • 1 teaspoon vanilla extract
  • 4 cups sifted confectioners’ sugar (460g)
  • 1/4 teaspoon salt (optional)

Instructions

  1. Butter an 8-inch square baking pan and line it with parchment paper, allowing two sides to hang over for easy removal.
  2. In a microwave-safe bowl, combine butter and peanut butter. Microwave for about 3 minutes until melted and bubbling. Stir to combine.
  3. Add vanilla and salt (if using), and stir well.
  4. Stir in the sifted powdered sugar until no white streaks remain and the mixture is smooth.
  5. Quickly pour into the prepared pan and smooth the top with a spatula or create a swirl pattern with the back of a spoon.
  6. Refrigerate for 4 hours until fully set.
  7. Lift the fudge out using parchment paper and cut into 1-inch squares. Serve at room temperature for best texture.

Notes

  • Use commercial peanut butter like JIF or Skippy for best results.
  • Don’t substitute margarine—it may affect texture and setting.
  • Sift powdered sugar to avoid lumps and ensure a creamy finish.
  • Let fudge come to room temperature before eating for ideal creaminess.
  • For cleaner cuts, wipe the knife and dip it in hot water between slices.