Instructions

1. 1
   Preheat oven to 350 °F (175 °C).
2. 2
   Boil yams in skins until about half done.
3. 3
   Drain water from yams, remove skins, and cut in cubes.
4. 4
   Place yam cubes in a greased baking dish and dot with margarine.
5. 5
   Make a syrup by boiling brown sugar, water, and vanilla together. Pour over the yams.
6. 6
   Bake for 45 to 50 minutes, basting frequently with syrup, until yams are tender.