Preheat your oven to 400°F (200°C).
Wash and dry the sweet potatoes. Pierce them with a fork and place them on a baking sheet.
Bake for about 1 hour or until they are tender. Let them cool, then peel and mash them in a bowl. Reduce oven temperature to 350°F (175°C).
In a large bowl, whisk together the mashed sweet potatoes, eggs, milk, melted butter, brown sugar, vanilla extract, cinnamon, nutmeg, ginger, and salt until well combined.
Roll out the pie dough and place it in a pie dish.
Pour the sweet potato filling into the pie crust.
Bake the pie in the preheated oven for about 55-60 minutes or until the filling is set.
You can cover the edges of the pie crust with foil if they start to brown too quickly.
Allow the pie to cool completely before slicing and serving.
Optionally, serve with whipped cream or vanilla ice cream.