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29 June 2020

A tender grilled London broil recipe marinated in the best London broil marinade with fresh chili paste. Slice against the grain and serve it. Absolutely mouthwatering on the grill. This is my favorite way to cook it.

Fire up the grills, my friends! We’re making Grilled London Broil today, and it is absolutely outstanding. It’s incredibly easy to prepare, and the savoriness is tops. It all starts with our base, the London Broil Marinade, that tenderizes the beef and infuses it with flavor.

What is London Broil?

London Broil is a cut of beef that is marinated, then cooked (usually grilled or broiled), then sliced and served. The name refers to the cooking method, not the cut of meat. In fact, you can use different cuts of beef to make London broil. Top Round steak is the most popular. It is cut from the rear and has a lot of flavor, but it typically needs tenderizing before cooking. The marinade makes it tender and juicy.

Flank steak is another popular cut. Try it with skirt steak or other leaner cuts of beef that will benefit from a good marinade.

Sliced London broil on a platter with chili flakes

There is a key takeaway for this recipe in order to make it “Madness Style”. If you guys are like me, and I know you are, you want your flavors to be jacked up a few notches. You want some BOOM with your food. This recipe delivers.

It’s all about the marinade.

London Broil Marinating

London Broil Marinade

A good steak marinade not only adds flavor to your chosen steaks, but also helps to tenderize tougher cuts, like skirt steak, top sirloin, or flank steak. Of course you can marinate any cut you’d like. A good London broil marinade will help you enjoy those tougher cuts, which are much more affordable, yet no less flavorful.

See my London Broil Marinade recipe for more discussion.

Let’s talk about how we make grilled London broil, shall we?

London Broil Marinade Ingredients

Grilled London Broil Ingredients

  • 2 pound London broil cut of beef (use top-round or flank steak)
  • FOR THE MARINADE
  • 2-3 spicy chili peppers (I used a jalapeno, 1 Fresno pepper and a habanero pepper)
  • 2 cloves garlic, chopped
  • ½ cup soy sauce
  • 2 tablespoons apple cider vinegar
  • 2 tablespoons olive oil
  • 1 teaspoon sugar
  • 1 teaspoon cayenne pepper
  • 1 teaspoon dried oregano
  • 1 teaspoon dried thyme
  • 1 teaspoon salt
  • 1 teaspoon black pepper

How to Grill London Broil – the Recipe Method

Make the Marinade. Add the chili peppers, garlic, soy sauce, vinegar, olive oil, sugar and seasonings to a food processor. Process until very smooth.

Next, score the London broil with a cross hatch pattern to allow the marinade to really get in there and flavor the meat.

Marinate the meat either in a shallow dish or in a large plastic bag. Be sure to cover the meat as much as possible. 

Cover and refrigerate overnight for. I recommend at least 6 hours for a marinade, but 24 hours is better, so try to get it going the night before, or in the morning.

London Broil Marinated

Grill the Beef. Heat your grill to medium-high heat. Remove steak from marinade and add it to lightly oiled grates. Grill it for 5 minutes, then flip and grill another 5 minutes.

Seared London broil on the grill

It doesn’t take very long to cook a London Broil. You’re looking for an internal temperature of 125 degrees F internally for medium-rare or 130 degrees F for medium, so keep grilling until you reach your desired temperature and doneness.

I like to use my ThermoPop meat thermometer from ThermoWorks (I”m an affiliate). Works great!

Remove from heat and let it rest 10 minutes to allow the juices within to redistribute.

Finally, slice it against the grain and serve it up! So good!

Sliced London broil on a platter, ready to serve

Boom! Done! Easy recipe, isn’t it? I LOVE London broil. I served ours with a Homemade Chimichurri Rojo Recipe. Give it a try. It’s perfect for London Broil.

I hope you enjoy it!

Spicing Things Up

The chili peppers add a lot of flavor and heat. I used a jalapeno pepper, habanero pepper, and a couple of vibrant red Fresno peppers.

Try it with a ghost pepper. Ghost peppers have an excellent heat, over 1 Million Scoville Heat Units, and they’re quite fruity, as are habaneros, which have a very respectable heat level as well. 

If you’re serious about your heat, include more ghost peppers, or go with something even hotter, like scorpions, 7-Pots, or the Carolina Reaper.

If you’d like to tamp down the heat and not go TOO crazy, consider red cayenne peppers or ripened red serranos You’ll still get a pleasant level of heat without going overboard.

Recipe Tips & Notes

  • Other Ingredients and Flavors. You can use other ingredients in your marinade. Try it with balsamic vinegar, fresh herbs, citrus like lime or lemon juice. 
  • Cooking. Grilled London broil is SO GOOD, but it’s also very good broiled in the oven. You may just need an extra few minutes.
  • Serving. I love to serve mine with grilled peppers, fresh chopped herbs and chili flakes. Try it with a good chimichurri sauce or this red chimichurri recipe. It’s great with a nice herb butter or blue cheese.

A juicy cut of sliced London broil

What to serve with London broil?

I love to serve up grilled London Broil with a spicy creamy coleslaw or a scoop of Cuban black beans, but here are some other side dish recipe ideas.

Sliced London broil on a platter with garnish

Try Some of My Other Popular Recipes

Sliced London broil on a cutting board

Got any questions? Ask away! I’m happy to help. If you enjoy this recipe, I hope you’ll leave a comment with some STARS. Also, please share it on social media. Don’t forget to tag us at #ChiliPepperMadness. I’ll be sure to share! Thanks! — Mike H.

Grilled London Broil Recipe

A tender grilled London broil recipe marinated in the best London broil marinade that's huge on flavor. Slice against the grain and serve. Perfect on the grill.
Prep Time15 mins
Cook Time10 mins
Marinade6 hrs
Total Time6 hrs 25 mins
Course: Main Course
Cuisine: American
Keyword: beef, flank steak, grilling, marinade, skirt steak, steak
Servings: 6
Calories: 257kcal

Ingredients

  • 2 pounds London Broil

For the London Broil Marinade

  • 2-3 spicy chili peppers I used 1 jalapeno, 1 Fresno and 1 habanero
  • 2 cloves garlic chopped
  • ½ cup soy sauce
  • 2 tablespoons apple cider vinegar
  • 2 tablespoon olive oil
  • 1 teaspoon sugar
  • 1 teaspoon cayenne pepper
  • 1 teaspoon dried oregano
  • 1 teaspoon dried thyme
  • 1 teaspoon salt
  • 1 teaspoon black pepper

Instructions

  • Add the chili peppers, garlic, soy sauce, vinegar, olive oil, sugar and seasonings to a food processor. Process until very smooth.
  • Score the London Broil on both sides with a crosshatching pattern, about ¼ inch deep to allow the marinade to penetrate the meat.
  • Add the meat to a large baggie or into a dish and pour the marinade over it. Rub the marinade into the meat and cover.
  • Refrigerate at least 6 hours, though it is best to marinade overnight for better flavor.
  • Heat a grill to medium-high heat. Very lightly oil the grates.
  • Grill the London Broil for 5 minutes, then flip and grill another 5 minutes.
  • Check the temperature. You’ll want 125 degrees F internally for medium-rare or 130 degrees F for medium. Continue to grill and flip until you reach your desired temperature, up to 20 minutes TOPS.
  • Rest for 10 minutes, then slice up against the grain and serve.

Nutrition

Calories: 257kcal | Carbohydrates: 3g | Protein: 37g | Fat: 10g | Saturated Fat: 2g | Cholesterol: 92mg | Sodium: 1565mg | Potassium: 612mg | Fiber: 1g | Sugar: 1g | Vitamin A: 150IU | Vitamin C: 3mg | Calcium: 47mg | Iron: 4mg

NOTE: This recipe was updated on 6/29/20 to include new photos and information. It was originally published on 6/7/17.

Grilled London Broil Recipe

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