Mushroom Butterflies

Directions

1. 1
   Trim mushroom stems and wipe caps clean with a paper towel.
2. 2
   Slice lengthwise.
3. 3
   Toss mushrooms, shallots and garlic with oil in a large, heavy saucepan.
4. 4
   Cook over medium-high heat, stirring, for 10 minutes.
5. 5
   Season with pepper.
6. 6
   Toss in 13 cup parsley and lemon zest.
7. 7
   Cook 1 minute longer.
8. 8
   Reserve, covered, on the stove.
9. 9
   Shortly before serving, cook the pasta in boiling, salted water, 6 to 8 minutes.
10. 10
    Drain, reserving 2 tablespoons of the cooking liquid.
11. 11
    Toss pasta with mushrooms and reserved liquid; then toss with Parmesan and serve immediately, or serve the cheese alongside.
12. 12
    Garnish with remaining tablespoon of chopped parsley.