Ingredients

1/4 cup vegetable oil (Becel)
2 tablespoons red wine vinegar
2 tablespoons Dijon mustard
2 teaspoons Worcestershire sauce
1/2 teaspoon dried thyme or 1 1/2 teaspoons chopped fresh thyme
3/4 lb boneless sirloin steak or flank steak

Directions

In a small bowl, whisk together oil, vinegar, mustard, Worcestershire sauce and thyme.Trim as much fat as possible from steak.Place in shallow glass dish, just large enough to hold steak.Pour marinade over meat, turning to coat.Cover and refrigerate at least 4 hour or overnight, turning occasionally.Drain meat.

Place meat on broiler pan.Broil 3 inches from heat for 13 to 17 minutes for medium doness, turning once.To serve slice beef thinly across the grain or BBQ over medium heat for 4 to 5 minutes per side for rare.