1-1/2 pounds flank steak or London broil, trimmed

For the marinade:
1 cup lime juice
1 medium red onion thinly sliced (about 1 cup)
1 tablespoon chopped parsley or cilantro
1/2 teaspoon of salt
1/8 teaspoon red hot pepper flakes
1 clove garlic, halved

To prepare marinade, in a shallow glass dish, combine lime juice, onion, cilantro, salt, and red pepper flakes. Mix well.

Rub cut sides of garlic over steak. Place steak in marinade; turn to coat. Cover dish with plastic wrap; refrigerate for 2 hours. Preheat the broiler. Line broiler pan with foil. Remove steak from marinade. Discard marinade in dish. Place steak on prepared pan.

Broil steak for 4-5 minutes per side for medium or 6-7 minutes for well done. Place steak on carving board or serving platter. Let stand for 10 minutes before cutting across the grain into thin slices.

Serves 6