Preheat oven to 450°. On a lightly floured surface, roll dough to a 1/8-in.-thick circle; transfer to a 9-in. deep-dish pie plate. Trim and flute edge. Line unpricked crust with a double thickness of heavy-duty foil. Bake 10 minutes. Remove foil; bake 5 minutes longer. Sprinkle coconut over crust; set aside. Reduce oven setting to 350°., In a large bowl, combine the eggs, milk, sugar, flour, vanilla and salt. Pour over coconut; sprinkle with nutmeg., Bake, uncovered, until a knife inserted in the center comes out clean, 45-50 minutes. Cool on a wire rack 1 hour. If desired, top with toasted coconut to serve. Refrigerate leftovers.