Prepare the Lemon Filling:
In a saucepan, whisk together sugar, cornstarch, and water. Cook over medium heat until thickened. Slowly whisk in the beaten egg yolks, then stir in butter, lemon juice, and lemon zest.Assemble the Pie:
Pour the lemon filling into the baked pie crust.Make the Meringue:
In a clean bowl, beat egg whites with cream of tartar until soft peaks form. Gradually add sugar and continue beating until stiff peaks form.Top the Pie:
Spread the meringue over the hot lemon filling, making sure to seal the edges to prevent shrinking.Bake:
Bake at 350°F (175°C) until the meringue is golden brown, about 10–15 minutes.Cool and Serve:
Allow the pie to cool completely before slicing. Enjoy the perfect balance of sweet and tart in every bite!
