20-Minute Marinated London Broil
A tender, flavorful London broil that transforms this lean cut through an overnight marinade of soy sauce, lemon juice, and aromatic seasonings. The high-heat broiling technique creates a beautifully caramelized exterior while keeping the interior perfectly medium-rare. This crowd-pleasing recipe delivers restaurant-quality results at home and works beautifully for weekend dinners or casual entertaining when you want an impressive yet straightforward main course.
Ingredients
- ⅓ cup soy sauce
- ⅓ cup lemon juice
- ½ cup olive oil
- ¼ cup Worcestershire sauce
- 1 Tablespoon garlic, minced
- 2 Tablespoons Italian seasoning
- 1 teaspoon pepper
- ½ teaspoon salt
- 1 pinch red pepper
- 2 pounds London Broil Round Steakflank steak1:1similar-cut
reduce cooking time slightly
Instructions
- 1
Combine soy sauce, lemon juice, olive oil, Worcestershire sauce, garlic, Italian seasoning, salt, pepper, and red pepper in a gallon-sized bag
- 2
Add steak to marinade bag and marinate for 2 hours or overnight
- 3
Preheat broiler to high heat
- 4
Remove steak from marinade and place in baking dish
- 5
Broil for 5-6 minutes, then flip and broil 3-4 minutes until internal temperature reaches 135°F for medium rare
- 6
Rest steak for 10 minutes before slicing
Tips
Score the surface of the London broil in a crosshatch pattern before marinating to help tenderize and allow deeper flavor penetration.
Always slice London broil against the grain at a 45-degree angle for maximum tenderness.
Use a meat thermometer for accuracy - London broil can go from perfect to overcooked quickly under the broiler.
Good to Know
Refrigerate cooked steak for up to 3 days. Slice just before serving for best texture.
Marinate steak up to 24 hours ahead. Cook just before serving for optimal doneness.
Slice thin against the grain and serve immediately while warm.
Common Mistakes
Don't skip resting time to avoid losing juices when slicing.
Avoid over-marinating beyond 24 hours to prevent mushy texture.
Don't broil without preheating to ensure proper searing.
Substitutions
Gluten-Free Swaps
General Alternatives
FAQ
Can I grill this instead of broiling?
Yes, grill over high heat for 4-5 minutes per side. The marinade works perfectly for grilling and may provide even better flavor development.
How long can I marinate the steak?
Minimum 2 hours for decent flavor, but overnight (8-24 hours) gives the best results. Don't exceed 24 hours as the acid can break down the meat too much.
What if I don't have a meat thermometer?
Press the center of the steak - it should feel slightly firm but give a little for medium-rare. Total cooking time is usually 8-10 minutes for 1-inch thick steaks.