Ingredients

  • 1 tablespoon canola or other flavorless vegetable oil
  • 1 1/2 cups heavy whipping cream
  • 1 cup light corn syrup
  • 3/4 cup sugar
  • 3 tablespoons unsalted butter, softened
  • 2 teaspoons pure vanilla extract
  • 1 1/2 cups toasted and coarsely chopped walnuts or unskinned almonds

Method

  • Line an 8-inch-square metal baking pan with foil, extending the foil over the sides of the pan.
  • Thoroughly coat the foil with the canola oil.
  • In a heavy 3-quart saucepan, combine the cream, corn syrup and sugar.
  • Stir continuously over moderate heat with a long-handled wooden spoon until the sugar is dissolved, about 5 minutes.
  • Using a pastry brush dipped in warm water, brush down the side of the pan twice to prevent crystallization.
  • Raise the heat to moderately high and place a candy thermometer in the pan.
  • Continue to cook the syrup, stirring constantly, until the temperature registers 250, about 30 minutes.
  • Remove the saucepan from the heat and quickly stir in the butter, vanilla and nuts.
  • Pour the caramel into the prepared pan and let cool to room temperature on a rack, at least 2 hours.
  • Use the ends of the foil to lift the caramel from the pan.
  • Peel the foil off the back of the caramel.
  • Coat the blade of a chef's knife with oil.
  • Cut the caramel into 8 equal strips, then cut each strip into 8 pieces.
  • Arrange the caramels, without touching one another, between sheets of wax paper, or wrap them individually in wax paper.