How do you grill marinated London broil?

Marinate the meat, preheat your grill, cook over medium-high heat, and slice thin against the grain.

How long does London broil need to be marinated?

At least 4 hours; overnight gives the best flavor and tenderness.

Yes when marinated and sliced thinly, it becomes tender and flavorful.

Grilling or broiling over high heat for a short time, then resting before slicing.

This grilled marinated London broil recipe delivers juicy, tender steak with bold flavor. Marinate, grill, slice thin, and enjoy!

Scale

1½ to 2 lbs London broil (top round or flank steak)

¼ cup olive oil

¼ cup soy sauce

3 tbsp balsamic vinegar

3 tbsp Worcestershire sauce

2 tbsp brown sugar

4 garlic cloves, minced

1 tsp black pepper

1 tsp dried rosemary or thyme

Optional: pinch of red pepper flakes

Cook Mode Prevent your screen from going dark

1. Whisk olive oil, soy sauce, balsamic vinegar, Worcestershire, brown sugar, garlic, pepper, and rosemary.

2. Place steak in a zip-top bag or dish; add marinade and refrigerate at least 4 hours or overnight.

3. Preheat grill to medium-high heat (around 450°F). Pat steak dry.

4. Grill 4–6 minutes per side for medium-rare or adjust to preferred doneness.

5. Rest steak for 10 minutes before slicing thinly against the grain.

6. Serve immediately with your favorite sides.

Marinate overnight for maximum tenderness.

For added flavor, brush steak with reserved marinade during grilling (do not use marinade that touched raw meat without boiling first).

Pairs perfectly with grilled vegetables or fresh salad.