Grilled London Broil

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!) 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!

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

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

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

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 over night. Flip meat every few hours.

London Broil wrapped in foil

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.

I served this with a side of my California Slaw, Old Fashioned Blueberry Muffins, Fresh Fruit Salad, and Oven-Fried Summer Squash. It was an outstanding meal!

Grilled London Broil

Try this fabulous grilled main dish 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 sure to be the star of the show!

Sharing this awesome recipe over on Meal Plan Monday! You can click HERE to join me and some of my favorite blogger friends as we share our favorite recipes each week!

Remember you can always follow me on Pinterest, Facebook, Instagram, and Twitter! Oh, and I’m sharing this recipe over on the Weekend Pot Luck! One of my favorite Link Parties. Click HERE to join the fun!

Happy Grilling!

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Grilled London Broil
Grilled London Broil
Adapted from All Recipes

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

  • 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.

Prep Time: 5 hours, 30 minutes - Cook Time: 15 minutes


  1. Donna B Oliphint | 15th Jul 18

    “Cardio done for the day…”! Love you!

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