1 pound beef flank steak or London broil
2 medium white onions, thinly sliced
1 teaspoon salt
2 tablespoons unsalted butter
2 tablespoons oil
1 teaspoon fresh lemon juice
1/2 teaspoon salt
1 teaspoon freshly ground black pepper
2 cloves garlic, crushed
Cut both sides of steak in a diamond pattern, 1/8 inch deep.
Cook and stir onions and salt in butter until onions are tender. Keep this mixture warm.
Mix remaining ingredients and brush half on one side of the beef
. Broil 3 inches from heat for 5 minutes. Turn and brush with remaining oil mixture. Broil 5 more minutes. Cut across grain in thin slices. Serve with onions.