Points Value: 4
1/2 cup Kraft Light Zesty Italian Reduce Fat Dressing, divided
1 lb well-trimmed boneless beef sirloin steak
1/3 cup fat free sour cream
4-1/2 tsp. grated Parmesan cheese
1/4-1/2 tsp. black pepper
1 cup thinly sliced onions (about 1 medium)
Pour 1/4 cup of the dressing over steak in resealable plastic bag. Seal bag; turn to coat. Refrigerate 30 min. or overnight to marinate. Combine sour cream, 2 Tbsp. of the remaining dressing, the Parmesan cheese and pepper. Refrigerate until serving time.
Heat remaining 2 Tbsp. dressing in large nonstick skillet on medium heat. Add onions; cook 7-8 min. or until golden brown, stirring frequently. Remove onions; set aside.
Drain steak; discard marinade. Cook steak in same skillet on medium heat 3-4 min. on each side for medium doneness. Place on cutting board; slice crosswise into thin strips. Serve steak topped with sauce and onions.