Perfect Tender London Broil (Restaurant-Quality at Home!)

Combine the balsamic vinegar, soy sauce, and Worcestershire sauce in a large bowl.

Whisk in the olive oil, minced garlic, rosemary, thyme, black pepper, brown sugar, and paprika until thoroughly combined.

Pat your London broil dry with paper towels. Using a sharp knife, score the surface in a diamond pattern about ¼-inch deep on both sides.

Place the London broil in a large ziplock bag or shallow dish and pour the marinade over it, ensuring it's completely coated. Seal or cover tightly and refrigerate for at least 8 hours, ideally 24 hours.

Remove the London broil from the refrigerator 30-45 minutes before cooking to bring it to room temperature.

Preheat your grill or broiler to high heat. Cook for approximately 5-7 minutes per side until the internal temperature reaches 135°F for medium-rare.

Allow the meat to rest, loosely tented with foil, for 10 minutes.

Identify the direction of the meat fibers and slice thinly (about ¼-inch thick) perpendicular to them.