Preheat your oven to 350°F (175°C).
Prepare the pie crust and place it in a pie dish.
In a mixing bowl, whisk together the eggs and sugar until well combined.
Gradually add the milk, vanilla extract, and salt to the egg mixture.
Mix until smooth and fully combined.
Pour the custard mixture into the prepared crust.
Sprinkle ground nutmeg on top if desired.
Bake in the preheated oven for 45 minutes or until the center is set.
Remove from the oven and let it cool on a wire rack.
Chill in the refrigerator for at least 2 hours before serving.