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Creamy Peanut Butter Fudge Recipe

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5 from 77 reviews

This classic Peanut Butter Fudge recipe is a creamy, rich treat made with just a few simple ingredients. It combines smooth peanut butter, butter, and confectioners’ sugar for a thick, melt-in-your-mouth texture. Perfectly sweetened with vanilla and optionally salted or customized with mix-ins like chocolate chips or Reese’s Peanut Butter Cups, this no-cook fudge is easy to prepare and sets in the refrigerator for hours. Ideal for dessert lovers and peanut butter fans alike, it yields 48 delightful squares to share or savor.

Ingredients

Units Scale

Main Ingredients

  • 1 cup (250g) creamy peanut butter
  • 1 cup (2 sticks or 230g) unsalted butter
  • 1 teaspoon pure vanilla extract
  • 4 cups (460g) sifted confectioners’ sugar

Optional Ingredients

  • 1/4 teaspoon salt
  • 3/4 cup add-ins, such as chocolate chips, peanuts, or Reese’s Peanut Butter cups

Instructions

  1. Prepare the pan: Line an 8-inch or 9-inch square baking pan with aluminum foil, ensuring there is an overhang on the sides to easily lift the fudge out once set.
  2. Melt the butter and peanut butter: In a large microwave-safe bowl, combine the peanut butter and sliced butter. Microwave in 1-minute intervals, stirring well between each session until the mixture is completely melted and smooth.
  3. Add flavor and sugar: Remove from the microwave and stir in the vanilla extract using a silicone spatula or wooden spoon. If desired, add 1/4 teaspoon of salt for a salty-sweet balance. Then, gradually add the sifted confectioners’ sugar, stirring continuously until the mixture is thick and dough-like.
  4. Incorporate add-ins (optional): Fold in any add-ins such as chocolate chips, peanuts, or Reese’s Peanut Butter Cups while the fudge mixture is still warm to evenly distribute them.
  5. Press and chill: Transfer the fudge mixture into the prepared pan, pressing it down firmly and smoothing the top with the back of a spoon or spatula. The surface may appear slightly oily. Cover tightly with aluminum foil and refrigerate for at least 4 hours or until firm.
  6. Serve and store: Once firm, lift the fudge out using the foil overhang and cut into 48 squares. Store the fudge in an airtight container in the refrigerator for up to one week to maintain freshness.

Notes

  • For best results, use creamy peanut butter for a smooth texture.
  • Sifting confectioners’ sugar prevents lumps and ensures a silky fudge.
  • Add-ins can be customized or omitted based on preference.
  • If you prefer salted fudge, add the optional 1/4 teaspoon salt; otherwise, omit.
  • Using aluminum foil overhang makes removing fudge from the pan easier.
  • Chilling time is essential for the fudge to set properly; do not rush this step.
  • Store fudge in the refrigerator as it contains butter and peanut butter which can soften at room temperature.