Marinated London Broil on the Grill

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Marinated London Broil on the grill is one of those delicious summer dishes that comes out perfect every time. It is literally a summer must have!

Close up of london broil steak cut up in thinly sliced pieces.


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This post is sponsored by The Beef Checkoff.  As always, all opinions are my own.

London Broil is one of those mysterious terms that no one knows how or where it originated. It really does not refer to a specific type of steak or recipe.

Originally, London Broil was often broiled flank steak, now butchers may label top round or other cuts of beef as London Broil.  It has now synonymous with the method of perpetration and cooking the steak.

What we do know is that this London Broil marinade is incredible!

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Speaking of grilling… my friends at  The Beef Checkoff and I want to see what you’re grilling up this month.  One lucky winner will win a Weber Q 1400 grill!  You can find out how to enter below.

What is London Broil

Contrary to what the name implies, London Broil has nothing to do with our friends across the pond.  Instead, the name refers to the style of cooking.

Many grocery stores sell beef labeled “London Broil” but it’s not actually a cut of meat. Usually, this cut is top round or another tougher cut of beef, making it the perfect candidate for marinating.

The acid in the marinade works its way into the beef and tenderizes it.  The longer you marinate this cut, the better.  I usually try for at least 8 hours to overnight.

Beef farmers across the US are committed to providing quality beef.  They focus on sustainability for the entire cycle – pasture to plate.  I’ve seen first hand how today’s farmers are making improvements to lower the environmental footprint of beef production.

You can learn more about sustainability in the beef industry here.  And, you can find more delicious recipes for beef here.

Why This London Broil on the Grill Works?

First, we start off with a very economical and underrated piece of beef, the Flank Steak or round steak. Then, we place it in a mouthwatering marinade and next, we grill it to perfection. It is truly an exceptional meal.

How to Make this London Broil Marinade

  • Step One: First, in a large zip lock bag, add oil, balsamic vinegar, Worcestershire sauce, soy sauce and Italian Seasoning.
  • Step Two: Next, shake to combine all the ingredients
  • Step Three: Then add Beef, refrigerate for 12 to 24 hours
Close up of raw london broil steak.
  • Step Four: Then preheat grill to medium high heat
  • Step Five: Next, remove steak from bag and place on the grill. (Photo 2 below)
  • Step Six: Place on the grill and cook for 9 to 10 minutes on the 1st side then flip and continue cooking for the same amount of time on that side, or until desired doneness.
  • Step Seven: Finally, remove steak from grill and allow to rest for at least 5 minutes before serving.
Close up of raw london broil steak and london broil marinade recipe.


Looking for more?  Check out all of the Recipes for the Grill on It Is a Keeper.

How to Cook London Broil

Steak is great on it’s own but also can take a lot of different flavors either via dry rub or marinade to enhance the flavor. Here are a few tips for cooking your steak:

  • First, always start with a hot grill.
  • Sear the meat on the high temperature first, to get a nice caramel brown color and then afterwards, lower temperature to cook.
  • Always let the meat rest after cooking to ensure that the meat is juicy and tender.
  • Finally, cut the meat against the grain so that it isn’t tough.

To find out more on how to grill the perfect London Broil, check here.

Close up of a cooked piece of london broil on the grill.

Side Dishes that Go With London Broil Steak

Sometimes when I am sitting down to meal prep, I find the perfect dish, like my London Broil on the Grill, but don’t know what to serve as sides. So I thought I would mention some of my favorite sides for the grill to give you some additional  ideas.

In Particular, I love a salad with Steak. Therefore, my Mexican Corn Salad, Grilled Panzanella Salad or Grilled Fruit Salad are all great choices.

Or how about some Garlic Parmesan Grilled Corn on the Cobb or Chili Lime Corn.


Close up picture of london broil steak finely cut up.

Expert Tips for Cooking London Broil

  • This Recipe Can be Doubled: This is a great recipe to double. In fact, I love leftovers to make steak sandwiches or salads.
  • Garlic: I love to add a little minced garlic to the marinade to change up the flavor!
  • It is Better with Butter: After you have cut your steak, finish it off with a little compound butter!

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If you’ve tried this recipe, please rate it in the comment section below.

Sliced medium-rare grilled London broil on a wooden cutting board.
5 from 5 votes

Grilled London Broil

Yield: 6 people
Prep: 5 minutes
Cook: 20 minutes
Marinate Time: 1 day
Total: 1 day 25 minutes
London Broil on the Grill is one of those delicious summer dishes that comes out perfect every time. It is literally a summer must have!
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  • cup Vegetable oil
  • ¼ cup Balsamic vinegar
  • ¼ cup Lemon juice
  • 3 tablespoons Dijon mustard
  • 1 ½ tablespoon Worcestershire sauce
  • 1 tablespoon Soy sauce
  • 1 tablespoon Italian seasoning blend
  • ½ teaspoon Crushed red pepper
  • 2 pound London Broil or top round roast


  • In a large zipper bag add the vegetable oil, balsamic vinegar, lemon juice, dijon mustard, Worcestershire sauce, soy sauce, Italian seasoning blend and crushed red pepper.
  • Smoosh the mixture until it’s combined.
  • Add beef to the bag and smoosh it around until it’s fully coated.
  • Refrigerate for 12-24 hours.
  • Preheat grill to medium high heat.
  • Remove beef from the marinade and place on preheated grill. Discard marinade.
  • Grill for 9-10 minutes then flip the beef.
  • Grill for another 9-10 minutes or until beef is desired temperature.
  • Let London Broil rest for 5 minutes before slicing against the grain.

Expert Tips

  • Easy to Cook: You want to pull the meat when it hits 110 internal. Once the London Broil hits 110 internal, it’s time to sear it. To seal in the juices.
  • Garlic: I love to add a little minced garlic to the marinade to change up the flavor!
  • It is Better with Butter: After you have cut your grilled London broil steak, finish it off with a little compound butter!

Estimated Nutritional Information

Calories: 428kcal | Carbohydrates: 5g | Protein: 36g | Fat: 30g | Saturated Fat: 22g | Cholesterol: 92mg | Sodium: 397mg | Potassium: 648mg | Fiber: 1g | Sugar: 2g | Vitamin A: 64IU | Vitamin C: 4mg | Calcium: 58mg | Iron: 4mg
The nutritional information provided are estimates. To learn more about how I calculate this information go to
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Course: Main Dish
Cuisine: American

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