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Classic Old-Fashioned Penuche Fudge

A stack of rich, brown squares of homemade penuche fudge piled on a white plate, highlighted by natural sunlight.

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Make smooth, creamy Penuche fudge using only brown sugar, butter, and milk for a distinct, old-fashioned sweet flavor.

Ingredients

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  • 2 cups packed light brown sugar
  • 1 cup whole milk
  • 2 tablespoons unsalted butter
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt

Instructions

  1. Line an 8×8 inch pan with parchment paper, leaving an overhang for easy removal. Lightly grease the paper.
  2. Combine the brown sugar, milk, and butter in a heavy-bottomed saucepan.
  3. Stir constantly over medium heat until the sugar dissolves and the mixture begins to boil.
  4. Stop stirring once boiling begins. Insert a candy thermometer.
  5. Cook the mixture without stirring until it reaches 234 degrees Fahrenheit (soft-ball stage). This usually takes 10 to 15 minutes.
  6. Remove the pan from the heat immediately. Stir in the vanilla extract and salt.
  7. Let the mixture cool undisturbed until it reaches 110 degrees Fahrenheit. Do not rush this cooling step.
  8. Once cooled, beat the mixture vigorously with a wooden spoon or an electric mixer on medium speed until the fudge loses its gloss and thickens to a creamy consistency, about 5 to 10 minutes.
  9. Quickly press the fudge into the prepared pan.
  10. Let the fudge set completely at room temperature for several hours before cutting into squares.

Notes

  • For a nutty version, gently fold in 1 cup of toasted pecans or peanuts just before pressing the fudge into the pan.
  • If you do not have a candy thermometer, use the cold water test: drop a small amount of syrup into cold water; if it forms a soft, pliable ball, it is ready.
  • If the fudge becomes grainy, you likely stirred it while it was boiling. Next time, do not stir after it begins to boil.

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