Broil London Broil In Oven | Time, Rack, And Doneness

A 1½-inch London broil usually needs 6 to 7 minutes per side under a hot broiler, then about 10 minutes of rest before slicing.

Broiling London broil in the oven is all about heat, distance, and timing. Get those three right, and this lean cut turns out browned on the outside, juicy in the center, and full of beefy flavor. Get them wrong, and it can go from tender to chewy in a hurry.

That’s why this method works so well. You’re using fierce top heat to build a dark crust while keeping the center at your target doneness. London broil loves that treatment, since it’s usually a top round or flank-style cut that does best with a hard sear and thin slicing across the grain.

If you want a plain answer before anything else, start with a preheated broiler, place the steak 4 to 5 inches from the heat, and cook it until the center reaches your preferred temperature. Pull it early, let carryover heat finish the job, then slice it thin. That’s the whole play.

What London Broil Means At The Store

London broil is often a label, not one single cut. Many stores use it for top round. Some use flank steak. A few use other lean beef cuts that can handle a fast, hot cook. The label matters less than the shape and thickness in front of you.

For broiling, a piece that’s about 1 to 1½ inches thick is the sweet spot. Thin steaks cook so fast that the center can overshoot before you build good color. Thick steaks give you more room to work, which makes timing less twitchy.

Since this is a lean cut, a marinade can help with surface flavor and browning. It won’t turn the meat into a different cut, though. The real fix for tenderness comes later, when you slice across the grain into thin strips.

What You Need Before The Steak Hits The Oven

• A broiler pan, wire rack set over a sheet pan, or another pan that lets heat circulate
• Tongs
• Paper towels
• An instant-read thermometer
• Salt, pepper, and a little oil if the meat looks dry on the surface

A thermometer is the tool that makes this repeatable. The safe minimum internal temperature chart from FoodSafety.gov puts whole cuts of beef at 145°F with a rest. You can pull the steak a bit early if you want it pinker, then let the rest bring it up.

How To Prep The Meat For A Better Crust

Take the steak from the fridge about 20 to 30 minutes before cooking. You don’t need hours on the counter. You just want to take the chill off a bit so the meat cooks more evenly.

Pat it dry well. Moisture is the enemy of browning. If you’re using a marinade, blot off the excess before the steak goes under the broiler. A wet surface steams first, and that slows crust formation.

Season with salt and pepper right before cooking, or salt it up to a few hours ahead and keep it chilled. If the cut is plain top round, a mix of soy sauce, garlic, oil, and a little acid gives the surface more punch. Don’t drown it. A thin coat does the job.

Rack Position Changes The Result

Most ovens broil from the top element. Set the oven rack so the meat sits 4 to 5 inches below that heat. Closer than that can burn the outside before the center catches up. Farther away can leave the steak gray and sluggish.

Preheat the broiler and the pan for a few minutes if your setup allows it. A hot pan starts browning the bottom right away, which helps the steak color more evenly.

Broil London Broil In Oven For Even Browning

Place the steak on the hot rack or pan and slide it under the broiler. Keep the oven door cracked only if your oven manual says to do that. Many modern ovens are built to broil with the door closed.

Cook the first side until browned, then flip once. That single flip is enough for most home ovens. Constant turning won’t buy you much here, and it lets heat out each time.

The broad rule is simple:

• 1-inch steak: about 5 to 6 minutes per side
• 1¼-inch steak: about 6 minutes per side
• 1½-inch steak: about 6 to 7 minutes per side

Those times are a starting point, not a promise. Broilers vary a lot. Some run fierce. Some run lazy. Meat shape also changes the clock. A tapered steak may hit medium near one end while the thick end stays medium-rare.

Broiling Times And Internal Temperature Targets

The easiest way to nail doneness is to pair time with temperature. Start checking the center during the last minute or two on the second side. Insert the thermometer through the side into the thickest part for the cleanest read.

Steak Thickness	Approximate Broiling Time	Pull Temperature
1 inch	10 to 12 minutes total	120°F to 125°F for rare
1 inch	11 to 13 minutes total	125°F to 130°F for medium-rare
1 inch	12 to 14 minutes total	135°F to 140°F for medium
1¼ inches	11 to 13 minutes total	120°F to 125°F for rare
1¼ inches	12 to 14 minutes total	125°F to 130°F for medium-rare
1¼ inches	13 to 15 minutes total	135°F to 140°F for medium
1½ inches	12 to 14 minutes total	125°F to 130°F for medium-rare
1½ inches	13 to 16 minutes total	135°F to 140°F for medium

Those pull temperatures leave room for carryover heat during the rest. The USDA advice on resting meat after cooking explains why that pause matters: temperature keeps climbing a bit after the steak leaves the heat.

What Makes London Broil Turn Tough

Most bad London broil comes down to one of four things. The steak was too close to the broiler. It cooked past medium. It didn’t rest. Or it was sliced the wrong way.

This cut has long muscle fibers. If you slice with the grain, each bite stays long and ropey. Slice across the grain, and those fibers turn short. The meat feels far easier to chew, even when the cut itself is lean.

Another common slip is skipping the dry surface. A slick, wet steak won’t brown well. You end up cooking longer just to chase color, and the center pays the price.

Signs You Should Pull It Now

• The top has dark browned spots but not a burnt crust
• The steak feels springy, not firm as a board
• The center is close to your target temperature
• Rendered juices on the pan are not smoking hard

Resting, Slicing, And Serving Without Losing Juices

Once the steak comes out, move it to a board and let it rest for 8 to 10 minutes. Don’t cover it tight with foil. Loose tenting is fine if your kitchen is cool, but a tight wrap can soften the crust you just built.

Then find the grain and cut across it at a slight angle. Thin slices work best. If you’re serving the steak plain, finish with a bit of flaky salt or a spoon of resting juices. If you marinated it, skip extra salt until you taste it.

London broil is also a strong fit for steak salads, grain bowls, sandwiches, and fajita-style platters. Thin slices make leftovers friendlier the next day, too.

Problem	Likely Cause	Fix
Gray surface	Pan or broiler not hot enough	Preheat longer and dry the meat well
Burnt outside, raw center	Rack set too close to the heat	Drop the rack one level
Dry center	Cooked too long	Check temperature earlier
Chewy slices	Cut with the grain or too thick	Slice thin across the grain
Pale bottom	Cold pan	Heat the pan before adding steak

Best Doneness For This Cut

Medium-rare to medium is the sweet spot for most London broil. That range gives you enough heat to soften the bite while keeping the center juicy. Rare can feel a little stringy in some top round cuts. Well-done tends to go dry and firm.

If you’re cooking for a mixed crowd, pull the steak near medium-rare and let carryover nudge it upward. The thinner end will land a touch more done, which solves the problem for people who don’t want much pink.

Should You Marinate It First?

You can, and many cooks do. A short soak adds surface flavor and helps browning. A long soak in a harsh acidic mix can make the outer layer mushy while the center stays the same, so keep it balanced. A few hours is plenty for most marinades. Overnight works if the acid level is low.

If you’d rather skip the marinade, a dry rub of salt, pepper, garlic powder, and a pinch of brown sugar works well under the broiler. The sugar should stay light so it browns instead of burning.

When Oven Broiling Beats Grilling

Broiling wins when you want control. Weather doesn’t matter. Cleanup is easier. You can also see the color better under the oven light and adjust fast if the crust builds quicker than expected.

Grilling still gives more smoke and a different char. But for a weeknight steak, the oven does a fine job. And once you know your broiler’s pace, the result is steady from one cook to the next.

If you’ve struggled with London broil before, this is the method worth repeating: dry steak, hot broiler, 4 to 5 inches from the heat, thermometer near the end, full rest, thin slices across the grain. That string of small choices is what turns a budget cut into a steak you’ll want to make again.