Candied yams with rum and raisins

1. Boil whole yams 20 to 40 minutes or until tender but not mushy.
2. Drain and cool, then cut into ¼ inch thick slices.
3. Arrange slices, overlapping, in a buttered shallow casserole.
4. Dot with butter, then sprinkle with brown sugar and raisins.
5. Drizzle with rum. Bakei uncovered at 350 or until bubbly and glazed.