Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 1/2  pounds        flank steak
   1                    onion -- thinly sliced
   1      teaspoon      fresh grated lemon peel
     1/2  cup           freshly squeezed lemon juice
   2      tablespoons   sugar
     1/2  teaspoon      salt
     1/2  teaspoon      oregano -- crushed
     1/8  teaspoon      freshly ground black pepper
   2      tablespoons   soy sauce
   1      tablespoon    butter

Preparation:

Trim any fat or membrane from the steak. With knife, score steak 1/8 inch deep on both sides in diamond pattern. Layer 1/2 onions in plastic bag or glass dish. Place steak on top of onions, cover with remaining onion. Thoroughly combine remaining ingredients, except butter and pour over steak, top with remaining onion. Marinate 2 - 3 hours or overnight in refrigerator or overnight, turning several times. Remove steak from marinade, wipe partially dry with paper towel. Drain onions and reserve. Broiler: Place steak on cold broiler pan 3 - 5 inches from heat source. Broil 3 -5 minutes per side. Grill: Prepare charcoal grill and grill over medium coals 3-5 minutes per side or until internal temperature is 135F for rare, 145F for medium. Meanwhile sauté onions in butter until soft. To serve, cut steak across grain in very thin slices; top with onions. SunKist Lemon Growers From The Best Recipes From The Backs of Boxes, Bottles, Cans and Jars by Ceil Dyer.