Ingredients

  • 4 egg yolks (reserve whites for meringue)
  • 1/3 cup cornstarch
  • 1 1/2 cups water
  • 1 1/3 cups sugar
  • 1/4 teaspoon salt
  • 3 tablespoons butter
  • 1/2 cup lemon juice
  • 1 tablespoon finely grated lemon zest
  • 1 (9-inch) pre-baked pie shell
  • 1 recipe Meringue, recipe follows
  • 4 egg whites
  • 1 pinch cream of tartar
  • 2 tablespoons sugar

Method

  • Adjust the oven rack to the middle position.
  • Preheat oven to 375 degrees F.
  • Whisk egg yolks in medium size mixing bowl and set aside.
  • In a medium saucepan, combine cornstarch, water, sugar, and salt.
  • Whisk to combine.
  • Turn heat on medium and, stirring frequently, bring mixture to a boil.
  • Boil for 1 minute.
  • Remove from heat and gradually, 1 whisk-full at a time, add hot mixture to egg yolks and stir until you have added at least half of the mixture.
  • Return egg mixture to saucepan, turn heat down to low and cook, stirring constantly, for 1 more minute.
  • Remove from heat and gently stir in butter, lemon juice, and zest until well combined.
  • Pour mixture into pie shell and top with meringue while filling is still hot.
  • Make sure meringue completely covers filling and that it goes right up to the edge of the crust.
  • Bake for 10 to 12 minutes or until meringue is golden.
  • Remove from oven and cool on a wire rack.
  • Make sure pie is cooled completely before slicing.
  • Place egg whites and cream of tartar in the bowl of a stand mixer fitted with the whisk attachment.
  • Beat egg whites until soft peaks form and then gradually add sugar and continue beating until stiff peaks form, approximately 1 to 2 minutes.
  • Use to top lemon filling.
  • Yield: topping for 1 (9-inch) pie