Source: dLife

London Broiled marinated overnight in a sauce of lemon peel, lemon juice, sugar, soy sauce, oregano, and pepper then broiled to taste.

Servings

1.5 lb london broil
1 tsp fresh lemon peel , finely shredded
0.5 cup fresh lemon juice
2 tbsp sugar
2 tbsp low sodium soy sauce
2 tsp fresh oregano , snipped and crushed (or 1/2 teaspoon dried)
0.12 tsp black pepper
1 medium lemons , slices (optional)
0.5 tbsp oregano leaves , fresh (optional)

1 Trim fat from meat. Score meat on both sides by making shallow cuts at 1-inch intervals in a diamond pattern.
2 Place meat in a resealable plastic bag set in a shallow dish.
3 For marinade, combine the lemon peel, lemon juice, sugar, soy sauce, oregano, and pepper. Pour over meat and close bag.
4 Marinate in the refrigerator for 2 to 24 hours. Drain meat, reserving marinade.
5 Preheat broiler. Place meat on the unheated rack of a broiler pan.
6 Broil 4 to 5 inches from the heat for 15 to 18 minutes for medium (160 degrees F), turning and brushing once with marinade halfway through broiling. Discard any remaining marinade.
7 To serve, thinly slice meat diagonally across the grain. If desired, garnish with lemon slices and fresh oregano leaves.

You should let this london broil sit overnight to maximize the flavor. You can BBQ in summer and broil in winter for a perfect, filling meal.