01 - Preheat the oven to 350°F.
02 - Place the unbaked pie crust in a 9-inch pie pan and set aside.
03 - In a large bowl, combine mashed sweet potatoes with melted butter and blend until smooth.
04 - Add granulated sugar, brown sugar, eggs, evaporated milk, vanilla extract, cinnamon, nutmeg, and salt to the bowl. Whisk until fully incorporated and creamy.
05 - Pour the filling mixture into the prepared pie crust and smooth the surface evenly.
06 - Bake in the preheated oven for 50 to 55 minutes, or until the center sets and a knife inserted comes out clean.
07 - Remove from oven and allow to cool completely on a wire rack before slicing.