To cook London broil in the oven:
- Marinate the London broil for at least 30 minutes or up to overnight using a marinade of choice (e.g., beef broth, soy sauce, Worcestershire sauce, balsamic vinegar, brown sugar).
- Preheat the broiler to high.
- Remove the meat from the marinade and pat dry. Rub with butter, olive oil, salt, and pepper.
- Place the London broil in a baking dish and broil for about 15 minutes on one side.
- Flip the meat and broil for another 15 minutes or until it reaches an internal temperature of 125°F for medium-rare.
- Remove from the oven, cover with foil, and let rest for 10 minutes.
- Slice thinly against the grain and serve.
Alternatively, you can sear the London broil in a hot skillet first for a crust, then bake it in a 400°F oven for 10-15 minutes depending on your preferred doneness. Rest for 5 minutes before slicing against the grain.
Cooking times and temperatures for doneness:
- Rare: 120°F
- Medium-rare: 130°F
- Medium: 135°F
- Medium-well: 140°F
- Well-done: 150°F.
This method ensures a flavorful, tender, and juicy London broil cooked in the oven.