How To Cook London Broil Steak

ByLily

Cooking London broil steak properly means understanding that this cut needs either quick high-heat cooking or slow marinating. If you want to know how to cook london broil steak without ending up with a tough, chewy piece of meat, you are in the right place. This guide walks you through everything from picking the right cut to slicing it against the grain for tender results every time.

What Exactly Is London Broil Steak?

London broil is not actually a specific cut of beef. It is a cooking method that traditionally uses tough, lean cuts like top round, flank steak, or sirloin tip. Butchers often label these cuts as “London broil” directly.

The meat tends to be lean and fairly thick. That means it can dry out fast if you overcook it. It also has a lot of muscle fibers, which is why slicing matters so much.

You will usually find it between one and two inches thick. That thickness helps it stand up to high heat without turning into shoe leather.

How To Cook London Broil Steak

There are two main paths here. You can marinate it for hours and then grill or broil it hot and fast. Or you can cook it low and slow and finish with a quick sear. Most home cooks go with the first option because it is simpler and gives great flavor.

Step 1: Choose And Prep Your Steak

Look for a piece that is even in thickness. If one end is much thicker than the other, it will cook unevenly. Trim any large chunks of hard fat but leave some for flavor.

Take the steak out of the fridge about 30 minutes before cooking. Cold meat cooks unevenly on the inside while the outside burns.

Step 2: Marinate For Tenderness And Flavor

A good marinade does two things. It adds flavor and it helps break down tough fibers. You want acid, oil, and salt working together.

  • Acid: balsamic vinegar, lemon juice, or red wine vinegar
  • Oil: olive oil or avocado oil
  • Aromatics: garlic, shallots, fresh herbs
  • Seasoning: soy sauce, Worcestershire, salt, pepper

Mix everything in a bowl or zip-top bag. Add the steak and turn it to coat. Let it sit in the fridge for at least 4 hours, but overnight is better.

Do not leave it in a very acidic marinade for more than 24 hours. The texture can get mushy and weird.

Step 3: Set Up Your Cooking Method

You have three solid choices: broiler, grill, or cast iron skillet. Each one works well if you manage the heat.

Broiler Method

Move your oven rack to the top position. Preheat the broiler for 10 minutes. Place the steak on a broiler pan or wire rack over a sheet pan.

Broil for 4 to 5 minutes per side for medium rare. Keep the oven door cracked open a bit so the element stays hot.

Grill Method

Heat your grill to high, around 450 to 500 degrees. Oil the grates. Grill for 4 to 6 minutes per side depending on thickness.

Use a meat thermometer to check doneness. Do not rely on time alone.

Cast Iron Skillet Method

Heat a heavy skillet over high heat until it just starts to smoke. Add a little oil. Sear the steak for 3 to 4 minutes per side.

This gives you a great crust. If your steak is thick, finish it in a 400 degree oven for a few minutes.

Step 4: Know Your Target Temperature

Pull the steak when it hits the right internal temp. Remember it will rise another 5 degrees while resting.

  • Rare: 120 to 125 degrees F
  • Medium rare: 130 to 135 degrees F
  • Medium: 140 to 145 degrees F
  • Well done: 155 degrees F and up (not recommended for this cut)

Medium rare is the sweet spot for London broil. Anything past medium gets tough fast.

Step 5: Rest The Meat

This step is not optional. Let the steak sit on a cutting board for 10 minutes. Cover it loosely with foil.

Resting lets the juices redistribute. If you cut too soon, all that juice runs out onto the board and you get dry meat.

Step 6: Slice Against The Grain

This is the most important part of the whole process. Look at the steak and find the direction the muscle fibers run. They look like little lines.

Cut perpendicular to those lines, not parallel. Slice thin, about a quarter inch thick. This shortens the tough fibers and makes every bite tender.

If you slice with the grain, even a perfectly cooked steak will feel chewy. So take your time here.

Common Mistakes To Avoid

People run into the same problems over and over with this cut. Here are the big ones.

  • Skipping the marinade and cooking it like a ribeye
  • Overcooking past medium
  • Cutting it right away without resting
  • Slicing with the grain instead of against it
  • Using a dull knife, which tears the meat

Fix these and your results improve right away.

Serving Ideas

Sliced London broil works great on a platter with chimichurri or a simple pan sauce. You can also serve it over rice, in tacos, or on a salad.

Leftovers hold up well in the fridge for three or four days. Slice them thin and use them in sandwiches or stir-fries. Just do not reheat them on high heat or they will dry out.

Final Tips For Perfect London Broil

Buy a good instant-read thermometer. It takes the guesswork out of cooking and saves you from ruining an expensive piece of meat.

Let the steak come to room temp before cooking. Marinate it long enough. And always, always slice against the grain.

Once you get these basics down, you can cook London broil steak on a weeknight without stress. It is a affordable cut that rewards a little patience and attention.

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