Ingredients for 4 servings:
1. 1/2 cup reduced-fat Italian salad dressing
2. 1 lb beef sirloin steak, well-trimmed
3. 1/3 cup fat free sour cream
4. 4 1/2 teaspoons grated parmesan cheese
5. black pepper
6. 1 medium onion, thinly sliced
Directions:
1. POUR 1/4 cup of the dressing over steak in resealable plastic bag.
2. Seal bag; turn to coat.
3. Refrigerate 30 minute or overnight to marinate.
4. Combine sour cream, 2 tablespoons of the remaining dressing, the Parmesan cheese and pepper.
5. Refrigerate until serving time.
6. HEAT remaining 2 tablespoons dressing in large nonstick skillet on medium heat.
7. Add onions; cook 7 to 8 minute or until golden brown, stirring frequently.
8. Remove onions; set aside.
9. DRAIN steak; discard marinade.
10. Cook steak in same skillet on medium heat 3 to 4 minute on each side for medium doneness.
11. Place on cutting board; slice crosswise into thin strips.
12. Serve steak topped with sauce and onions.