Heat oven to low broil setting.
Roughly chop greens; slice mushrooms (if needed), bell pepper, cucumber, and onion. Toss all together in a large bowl, then set aside.
Add all dressing ingredients to a small bowl and whisk together until smooth. Cover and refrigerate until ready to serve.
Remove excess fat from beef and slice into thin strips.
Place meat on a baking sheet and broil in oven for 6 minutes; turning over once during roasting.
Meanwhile, slice avocado and pears.
Add beef to the salad, then top with dressing, avocado and pear slices. (Serving size: 2 cups salad, 3 ounces steak)