How Long To Broil London Broil In Oven | Nail The Sear, Skip The Chew

Most London broil turns out best when you broil it 4–7 minutes per side (8–14 total), then rest it 8–10 minutes before slicing thin across the grain.

London broil can taste like steakhouse beef or like a boot, and the timer is the fork in the road. The trick is that “London broil” is a method and a cut label, not one single piece of meat. Most packages are top round or flank-style shapes: lean, beefy, and easy to overcook if you chase color instead of temperature.

Broiling is perfect for this job because it blasts heat from above and builds a browned crust fast. Your job is to get that crust while keeping the center in the doneness you want. That means you’ll use time as a starting point, then let a thermometer make the final call.

What You’re Timing When You Broil London Broil

Broil time is mostly about thickness, rack position, and starting temperature. A 1-inch piece pulled from the fridge cooks a lot slower than a 1-inch piece that sat on the counter for 25–30 minutes. A broiler that’s already ripping hot browns faster than one you turn on and rush into.

The other factor is your target doneness. London broil is lean, so medium-rare to medium tends to eat best. Past that, the muscle fibers tighten and the slices lose their tender bite unless you cut them paper-thin.

Best Doneness Targets For Texture

If you want that classic “London broil” bite—juicy, sliceable, still tender—aim for medium-rare or medium, then slice thin across the grain. If your household prefers medium-well or well-done, you can still make it work, but the slicing needs extra care and a short marinade helps.

Broiler Setup That Changes The Clock

Broilers run hot, and they run uneven. Most ovens concentrate heat near the back and right under the broiler element. The same cut can finish in 9 minutes one night and 13 minutes another night, depending on placement and preheat.

Rack Position

Set the rack so the meat sits about 4–6 inches below the broiler element. Too close and the surface scorches before the center warms. Too far and you’ll wait for color while the inside dries out.

Pan Choice

A broiler pan with a slotted top helps air circulate and lets rendered fat drip away. A wire rack set inside a sheet pan also works. If you set meat flat on a pan, the underside steams in its own juices and the crust won’t match the top.

Preheat And Door Position

Give the broiler 8–10 minutes to heat. If your oven’s manual suggests broiling with the door cracked, follow it. If it’s designed for door-closed broiling, keep it closed so the thermostat and airflow behave the way the oven expects.

Prep Steps That Protect Juiciness

Broiling is fast. That’s good, but it also means you don’t have time to fix seasoning or dryness later. Do the small stuff first so the cook stays calm.

Pat Dry For Better Browning

Moisture is the enemy of browning. Blot both sides with paper towels. If you marinated, let excess drip off, then pat the surface dry again. You’ll still have flavor, but you won’t waste the first minutes boiling off water.

Salt Timing

Salt either 40–60 minutes ahead (dry brine) or right before broiling. In the middle window, salt can pull moisture to the surface and slow browning at the start.

Use A Thermometer, Not Hope

Time gets you close; temperature gets you right. For food safety, the USDA lists 145°F as the safe minimum for whole cuts of beef with a rest time, and that rest also helps carryover heat finish the center. You can read the current guidance on USDA FSIS safe minimum internal temperatures.

For broiling, an instant-read thermometer is the easiest tool: slide it into the thickest part from the side, not straight down from the top, so you land in the true center.

How Long To Broil London Broil In Oven With Thickness And Doneness

Use the table below as a starting point with the rack 4–6 inches from the element and the broiler fully preheated. Times assume you flip once. If your broiler runs fierce, start checking early. If your cut is thicker than 1 1/2 inches, broiling alone can over-brown the surface before the center hits your target, so you may want a short oven finish at 400°F after searing under the broiler.

Pull the meat 5–10°F below your final target because carryover heat climbs during the rest. Then rest, slice thin across the grain, and judge the texture after the first bite—not while it’s still steaming on the board.

Thickness	Time Under Broiler (Flip Once)	Pull Temp (Then Rest)
3/4 inch	3–4 min per side (6–8 total)	120–125°F (medium-rare finish)
3/4 inch	4–5 min per side (8–10 total)	130–135°F (medium finish)
1 inch	4–6 min per side (8–12 total)	120–125°F (medium-rare finish)
1 inch	5–7 min per side (10–14 total)	130–135°F (medium finish)
1 1/4 inch	6–8 min per side (12–16 total)	120–125°F (medium-rare finish)
1 1/4 inch	7–9 min per side (14–18 total)	130–135°F (medium finish)
1 1/2 inch	8–10 min per side (16–20 total)	130–135°F (medium finish)
1 1/2 inch	9–11 min per side (18–22 total)	140°F (medium-well finish)

Step-By-Step Broiling Method For Reliable Results

This is the flow that keeps the crust bold and the center juicy. Read it once, then cook without bouncing around.

Step 1: Warm The Meat Slightly

Set the London broil on the counter for 25–30 minutes if it came straight from the fridge. You’re not trying to “room temp” it; you’re just taking the edge off so the center cooks on schedule.

Step 2: Preheat The Broiler And Pan

Turn the broiler on high and let it heat 8–10 minutes. Place your broiler pan or sheet pan with rack in the oven during preheat. A hot pan jump-starts browning and reduces sticking.

Step 3: Season For A Fast Cook

Pat the meat dry. Brush with a thin coat of oil, then season with kosher salt and black pepper. If you want more flavor, use garlic powder, smoked paprika, or a steak seasoning with salt as the first ingredient.

Step 4: Broil The First Side

Lay the meat on the hot rack. Broil until the top is well browned, using the time range for your thickness. You’re looking for deep brown edges and a few darker spots, not a black crust.

Step 5: Flip And Broil The Second Side

Flip with tongs. Broil the second side until it matches the first. Then start checking temperature. Slide the thermometer into the thickest part from the side so the tip sits in the center.

Step 6: Pull Early, Then Rest

Pull the meat when it hits the pull temperature from the table. Rest it 8–10 minutes on a cutting board. Rest time lets juices settle and carryover heat finish the center. If you want the USDA baseline for whole cuts and rest time, check FoodSafety.gov’s safe minimum internal temperature chart.

Step 7: Slice Thin Across The Grain

This is where London broil becomes London broil. Find the grain lines and cut across them at a slight angle. Keep slices thin—think 1/8 to 1/4 inch. Thicker slices feel chewier even when the steak is cooked well.

Doneness Targets And Carryover Heat

Broiled meat keeps cooking after it leaves the oven. That rise depends on thickness and how hot the surface got, but 5–10°F is common for London broil.

Simple Temperature Targets

• Medium-rare finish: Pull at 120–125°F, rest, then slice.
• Medium finish: Pull at 130–135°F, rest, then slice.
• Medium-well finish: Pull at about 140°F, rest, then slice thin.

If you’re cooking for mixed preferences, stop at medium, then serve thinner slices from the ends (more done) and thicker slices from the center (less done). That one roast can keep two camps happy.

Common Broiling Mistakes That Make London Broil Tough

Most “tough London broil” stories come from the same handful of problems. Fix these and the cut behaves.

Starting Too Wet

If the surface is wet, the broiler spends its first minutes steaming the meat instead of browning it. Pat dry. Let it sit uncovered for 5 minutes after seasoning if the surface still looks damp.

Cooking Past Medium Without A Plan

Lean beef loses tenderness fast as it climbs. If you want medium-well or well-done, help it out: marinate for 2–6 hours with an acidic piece (vinegar or citrus) plus oil, then slice thinner than you think you need.

Skipping The Rest

If you slice right away, juices run. You can watch it happen. Resting keeps more of that moisture in the meat and makes slices taste fuller.

Slicing With The Grain

Cutting with the grain leaves long muscle fibers in each bite, which chews like rope. Cutting across the grain shortens those fibers so the slice breaks apart with less work.

Troubleshooting Broiled London Broil

Use this chart when something goes sideways. Each fix is simple and repeatable.

What Happened	Why It Happens	What To Do Next Time
Outside is dark, center is underdone	Rack too close or broiler too hot for thickness	Move rack down 1 level and pull earlier, then finish at 400°F for a few minutes
Center is done, no crust	Rack too far or broiler not preheated	Preheat longer and set meat 4–6 inches from the element
Steak tastes dry	Cooked past medium or rested too short	Pull 5–10°F earlier and rest 8–10 minutes before slicing
Steak is chewy	Sliced too thick or with the grain	Slice thinner and cut across the grain at a slight angle
Surface sticks to the pan	Cold pan or not enough oil on the surface	Preheat the pan and brush a thin coat of oil on the meat
Smoke is intense	Dripping fat hits a hot surface	Use a rack so fat drips away; trim thick fat; keep oven clean
Seasoning tastes bland	Salt added too late or too little surface contact	Dry brine 40–60 minutes ahead or salt right before broiling, then pat dry

Flavor Options That Fit A Fast Broil

London broil doesn’t need a long ingredient list. It needs flavor that survives high heat and a short cook.

Simple Steakhouse Style

• Kosher salt
• Black pepper
• Garlic powder
• Small pinch of smoked paprika

Finish with a pat of butter during the rest, plus a squeeze of lemon if you like a brighter bite.

Quick Marinade For Extra Tender Bites

If your cut is top round and you want softer texture, a short marinade helps. Mix olive oil, soy sauce, minced garlic, a splash of vinegar, and a spoon of brown sugar. Marinate 2–6 hours, then pat dry before broiling so the surface browns.

Serving Ideas That Make The Most Of Thin Slices

London broil shines when it’s sliced thin and paired with something that catches the juices.

• Classic plate: mashed potatoes or roasted potatoes with the resting juices spooned on top
• Sandwich: toasted roll, horseradish sauce, and caramelized onions
• Salad: sliced steak over greens with tomatoes and a sharp vinaigrette
• Tacos: warm tortillas, sliced beef, onions, cilantro, and lime

Leftovers That Still Taste Good

Lean beef dries out when reheated hard. Keep it gentle. Warm slices in a covered skillet with a splash of broth, or tuck them into a hot sandwich so the bread and sauce carry the heat.

For meal prep, store the steak whole if you can, then slice what you need. A bigger piece holds moisture better than a pile of pre-sliced strips.

Fast Recap You Can Cook From

Broil London broil on a rack 4–6 inches from the element, with the broiler fully preheated. Start with 4–7 minutes per side for a 1-inch cut, then check temperature. Pull 5–10°F early, rest 8–10 minutes, and slice thin across the grain. That’s the combo that gets crust and tenderness on the same plate.