Magic Lemon Pie

🧾 Ingredients
For the crust:
1 pre-baked pie crust (store-bought or homemade)
For the lemon filling:
1 cup sugar
2 tablespoons cornstarch
1 cup water
3 egg yolks
1/2 cup fresh lemon juice
1 tablespoon lemon zest
2 tablespoons butter
For the meringue:
3 egg whites
1/4 teaspoon cream of tartar (optional)
1/2 cup sugar
👩‍🍳 Instructions
1. Make the lemon filling
In a saucepan, whisk sugar + cornstarch + water.
Cook over medium heat, stirring until thickened.