Bake crust in a 9-inch pie pan for 5 minutes. Remove pie crust from oven and set aside.
Reduce oven temperature to 325°F.
Using a large bowl, add eggs, sugar, flour and salt; stir until well combined.
Add melted butter, vanilla and milk; stir until well combined.
Pour egg mixture into pie crust. Sprinkle nutmeg evenly over top of filling.
Bake for 40-45 minutes, or until a toothpick inserted into center of pie comes out clean. Check pie crust after ~35 minutes. If it is browning too quickly, tent edges of pie with aluminum foil. (Note: If you have an instant-read thermometer, the internal temperature should be ~170°-175° when it's done.)
Remove pie from oven and place on a wire rack. Let cool to room temperature.
Once pie has cooled, refrigerate it until ready to slice and serve.
Notes
If using a store-bought crust, make sure to use a “deep dish” crust.