In a mixing bowl, combine the graham cracker crumbs, granulated sugar, and melted butter.
Press this mixture into a 9-inch pie dish, ensuring an even distribution along the bottom and up the sides.
Bake the crust for 10 minutes, then remove it from the oven and set it aside.
Prepare The Filling:
In a large bowl, mix together the mashed sweet potatoes, granulated sugar, brown sugar, evaporated milk, beaten eggs, ground cinnamon, ground nutmeg, salt, and vanilla extract.
Stir in the melted butter until the filling is smooth and well combined.
Assemble And Bake:
Pour the sweet potato filling into the pre-baked graham cracker crust.
Bake in the preheated oven for 50-60 minutes or until the filling is set. You can check the doneness by inserting a knife into the center; it should come out clean when the pie is done.
Once baked, remove the pie from the oven and allow it to cool completely on a wire rack.