Skip to Content

Grilled London Broil

Sharing is caring!

Grilled London Broil is a delicious easy to prepare main dish. The marinade for this recipe is made with ingredients found in your pantry! The big bonus? It’s so full of flavor you’ll forget about the steak sauce.

When I got married I’d never had London Broil. (I know… I lived life under a rock!) 

Sliced London Broil

Then the hubs and I were invited over to a friend’s house for dinner, and they served these tender slices of beef that made my taste buds stand up and salute! What was this magnificent dish I asked? “London Broil” they replied! From that day till now I’ve been a HUGE fan!

Sliced Grilled London Broil

Over the years I’ve tried different marinades. I was searching for one that would create so much flavor you wouldn’t even ask for Steak Sauce. (Which in this house is RARE! A-1 and 57 pay rent for refrigerator space!)

I’m super excited to share this delicious recipe with y’all! Let’s do this!

How To Make Grilled London Broil and Marinade

Start with one 4 pound flank steak. The more marbling the more tender this cut of beef will be. Flank Steak is usually a tougher cut of meat so the more marbling, the more tender it will be.

I made two because I had a lot of company coming over for dinner.

Flank Steak for London Broil

How To Prepare London Broil for marinade

Using a sharp knife score the meat, diamond cut, about 1/8 inch deep across the top. I like to make them about 1 inch apart. This will allow the marinade to seep down into the meat.

You’ll do this on both sides of the flank steak.

London Broil cut for marinade

Marinade for London Broil

For the marinade, in a small bowl mix together 1 clove of minced garlic, 1 teaspoon salt, 3 Tablespoons of soy sauce, 1 Tablespoon Ketchup, 2 Tablespoons of vegetable oil, 1/2 teaspoon coarse ground black pepper, and 1/2 teaspoon dried oregano.

I L.O.V.E. this marinade, and it’s simplicity! I know. It seems like it should have more ingredients to kick up the flavor. Trust me…this marinade is LOADED with fantastic drool worthy flavors! Sometimes simple is best! (I need reminding of this often. I create projects that get a tad out of hand!)

Ingredients for marinade in the bowl

Mix together with a whisk until well blended. Come on…whisk, whisk, whisk. (Cardio done for the day! High Five!)

Marinade blended together

Lay down a piece of aluminum foil large enough to wrap around the flank steak. Place prepared flank steak on the foil.

Flank Steak on Foil

How To Marinade London Broil for Grilling

Pour marinade over one side of the steak and rub it in. (Now try not to get jealous of the flank steak. I found myself resenting the massage it was receiving with herbed oils.) 

TIP: I reserve several Tablespoons to pour over meat once cooked and sliced.

Marinade over flank steak

Flip Flank Steak Over. (I may have slammed it down out of my growing resentment. Lol) Drizzle with more marinade and repeat the massage! (Lucky piece of meat!)

Marinated Flank Steak

Wrap foil tightly over the flank steak and place in the refrigerator until ready to grill. Marinade at least 5–6 hours, or overnight. Flip meat every few hours.

London Broil wrapped in foil

How To Grill London Broil

Take meat out 30 minutes before grilling.

Preheat an outdoor grill for high heat, and lightly oil grate. I prefer to oil the grate before I heat the grill… I’ll leave that up to you.

Place meat on the prepared grill. Cook for 3–7 minutes per side, or to desired doneness. I leave mine a little red in the center. This is 100% a personal choice.

London Broil on the Grill

Allow meat to rest 5–10 minutes before cutting. (See…one more reason to harbor resentment…lol)

Start cutting the London broil into 1/8-inch to 1/4 inch strips against the grain at a 45-degree angle. This is a slight angle, which will create diagonal cuts in the steak. Continue cutting until only steak strips remain.

Drizzle with remain marinade. Serve immediately.

Grilled and sliced London Broil

This delicious cut of meat is as tender and juicy as it appears in the photo. It’s fantastic! Plus it’s so EASY to make.

Great Sides Dish Recipes that go with London Broil

It was an outstanding meal!

Grilled London Broil

Try this fabulous Grilled London Broil at your next Family BBQ! It would be FANTASTIC for Father’s Day! What Dad wouldn’t love to sink his teeth into the amazing rich full flavored flank steak? It’s certain to be the star of the show!

Remember you can always follow me on Pinterest, Facebook, Instagram, and Twitter! 

Happy Grilling and Happy Nesting!

Norines Photo and signature
Yield: 8 servings

Grilled London Broil

Sliced London Broil

The marinade for this Flank Steak is so flavorful you'll skip the steak sauce. It's perfection!

Prep Time 5 hours 30 minutes
Cook Time 15 minutes
Total Time 5 hours 45 minutes


  • 1 clove garlic, minced
  • 1 teaspoon salt
  • 3 Tablespoons of Soy Sauce
  • 1 Tablespoon Ketchup
  • 2 Tablespoons of Vegetable Oil
  • 1/2 teaspoon coarse ground black pepper
  • 1/2 teaspoon dried oregano
  • 4 pounds flank steak


  1. In a small bowl, mix together garlic, salt, soy sauce, ketchup, vegetable oil, black pepper, and oregano.
  2. Score both sides of the meat, diamond cut, about 1/8 inch deep about 1 inch apart. Rub garlic mixture into both sides of the meat. Wrap tightly in aluminum foil, and refrigerate for 5 to 6 hours, or overnight. Flip meat every few hours.
  3. Preheat an outdoor grill for high heat, and lightly oil grate.
  4. Place meat on the prepared grill. Cook 3 to 7 minutes per side, or to desired doneness.


Time includes 5 hours marinade time.

Nutrition Information:


8 servings

Serving Size:

1 cup

Amount Per Serving: Calories: 472Total Fat: 22gSaturated Fat: 8gTrans Fat: 0gUnsaturated Fat: 11gCholesterol: 179mgSodium: 738mgCarbohydrates: 1gFiber: 0gSugar: 0gProtein: 63g

Sharing is caring!

This site uses Akismet to reduce spam. Learn how your comment data is processed.


Monday 25th of December 2023

Im trying this tonight. You made me laugh. I almost felt guilty massaging the meat. Lol

[email protected]

Thursday 28th of December 2023

Hi Mar! I just giggled! Thanks for the smile and I truly hope you enjoyed this recipe and that you have a wonderful New Year! Norine

Steak & Pork Un-kabobs | Norine's Nest

Tuesday 11th of June 2019

[…] Grilled Marinated London Broil […]

Grilled Chicken Cordon Bleu | Norine's Nest

Monday 20th of May 2019

[…] Grilled London Broil […]

Pastrami Dogs | Norine's Nest

Tuesday 14th of May 2019

[…] Grilled London Broil with Amazing Marinade […]

Donna B Oliphint

Sunday 15th of July 2018

"Cardio done for the day..."! Love you!

[email protected]

Monday 16th of July 2018

Hi Donna! Thanks so much! You made my day! Happy Nesting.. Norine

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Skip to Recipe