Mushroom sauce - adventures in microwave

1. Put mushrooms and butter into a 2-quart glass measuring pitcher.
2. Cover with plastic wrap.
3. Cook in microwave oven 2 to 3 minutes at high, or until musrooms are tender; stir once.
4. Remove from oven.
5. Blend flour into butter and cooked mushrooms.
6. Add broth gradually, stirring constantly.
7. Cook uncovered in microwave oven 6 minutes at high; stir every minute.
8. Add half-and-half gradually to mushroom mixture, stirring constantly.
9. Heat uncovered in microwave oven to serving temperature (about 2 minutes at high); stir once.
10. Remove from oven; stir in parsley and salt.
11. Yield: about 2-¾ cups.