Boil potatoes until done. Peel and place in mixing bowl, removing all dark spots beforehand. Beat with mixer on a higher speed for 2 3 min.
Mix sugar, nutmeg and flour. Mix in milk. Add melted margarine, syrup and vanilla, and mix until everything is thoroughly blended.
Pour in pie shell, and bake at 375~ for about 45 minutes or until set (when filling doesn't stick to hand when touched).
Recipe courtesy of Morrison's Cafeterias.