Preparation:
1. Prepare Balsamic Vinaigrette. Heat 1/2 cup vinaigrette in 10-inch skillet over medium heat. Cook mushrooms in vinaigrette 3 minutes; remove from heat.
2. Add remaining ingredients except pepper. Toss 1 to 2 minutes or until greens begin to wilt. Serve immediately. Sprinkle with pepper. | 