1In small bowl, beat broth, Worcestershire sauce, vinegar, sugar and garlic with wire whisk until blended; set aside.
2Spray 10-inch skillet with cooking spray; heat over medium-high heat. Cook beef in skillet 8 to 10 minutes, turning once, until brown. Remove beef from skillet; keep warm.
3Add broth mixture to skillet; heat to boiling. Boil 5 minutes, stirring constantly, until sauce is reduced to 1/3 cup; remove from heat.
4Cut beef across grain at slanted angle into thin slices. Serve sauce over beef. Sprinkle with parsley and pepper.