1. Cut stem from each sprout and trim.
2. Cut an X into stem end of sprout to speed cooking
3. Place sprouts in a saucepan in a single layer and cover with water
4. Bring to a boil; cook uncovered until almost tender when pierced, about 7 to 10 minutes
5. Drain in colander
6. Rinse under cold water, drain again
7. Melt butter in same saucepan over medium heat
8. Add shallots; cookfor 3 mintues, stirring ocassionally
9. Add half and half, mustard, salt and pepper
10. Simmer until sauce is thickened, about 1 minute
11. Add sprouts; heat until heated through, tossing gently with sauce, about 1 minute
12. Sprinkle with grated Parmesan before serving