how to cook london broil in the oven
Cooking London broil in the oven is a straightforward way to transform a lean, tough cut like top round or flank steak into a tender, flavorful meal with minimal effort. The key is marinating for tenderness, high-heat searing or broiling for a crust, and slicing thinly against the grain.
Quick Scoop
London broil shines with simple marinades featuring soy sauce, garlic, and herbs, then a quick sear-and-bake at 400°F for under 30 minutes total—perfect for busy weeknights as shared in recent 2026 recipes. This method yields juicy medium-rare results at 130°F internal temp, avoiding overcooking that toughens the meat. Trending forum tips emphasize resting the steak post-cook to lock in juices.
Why London Broil?
London broil isn't a specific cut but a preparation style for budget-friendly beef that's gained traction lately for its bold taste when handled right. Home cooks on Reddit rave about oven methods over grilling in winter, noting it feeds crowds cheaply yet impressively. Unlike fattier steaks, it needs acid- based marinades to break down fibers—think balsamic or Worcestershire for that melt-in-mouth texture.
"Sear then bake in the oven. This recipe is simple, quick and requires a few key ingredients. A delicious and tender London Broil served in under 30 minutes."
Essential Ingredients
Gather these for 1.5-2 lbs London broil (serves 4-6):
Item| Quantity| Purpose
---|---|---
London broil steak| 1.5-2 lbs| Main protein; 1-1.5 inches thick ideal 1
Soy sauce or tamari| 1/2 cup| Umami base for marinade 6
Olive oil| 1/4 cup| Helps sear and tenderize 3
Garlic (minced)| 4 cloves| Flavor punch 1
Balsamic vinegar| 1/4 cup| Tenderizes via acidity 5
Herbs (rosemary/thyme)| 1-2 sprigs| Aromatic lift 3
Kosher salt/pepper| To taste| Seasons crust 3
Optional add-ins: Dijon mustard or honey for sweetness, as in popular 2025 updates.
Step-by-Step Instructions
Follow this reliable oven method blending top sources for foolproof tenderness. Marinate overnight if possible—up to 24 hours max to avoid mushiness.
- Marinate the steak : Whisk soy sauce, oil, vinegar, garlic, and herbs in a zip-top bag. Add steak, seal, and refrigerate 4-24 hours, flipping halfway. This breaks down tough connective tissues.
- Prep for cooking : Remove steak 30-60 minutes before cooking to reach room temp—crucial for even doneness. Pat dry, season generously with salt/pepper. Preheat oven to 400°F (or 500°F for broiling).
- Sear on stovetop : Heat oven-safe skillet (cast iron best) over medium-high with 1 tbsp oil. Sear steak 2-3 minutes per side until browned crust forms. Add rosemary sprig for extra aroma if desired.
- Finish in oven : Transfer skillet to oven. Bake 7-15 minutes based on doneness: 125°F rare, 130°F medium-rare (pull early, it carries over). Use meat thermometer—don't guess!
- Rest and slice : Tent with foil 10 minutes off heat. Slice thinly against the grain at 45° angle—this is non-negotiable for tenderness.
Pro tip from forums : If no skillet, use broiler pan 4-6 inches from heat for 5-7 minutes/side straight in a 500°F oven.
Doneness Guide
Doneness| Internal Temp| Oven Time (after sear)
---|---|---
Rare| 120-125°F| 5-7 min 1
Medium-Rare| 130-135°F| 7-10 min 3
Medium| 140°F| 10-15 min 7
Aim medium-rare; over 145°F dries it out.
Variations and Tips
- Low-and-slow braise : For ultra-tender (not traditional), cover with broth/onions at 325°F for 2-3 hours—great for beginners per Reddit threads.
- Air fryer hybrid : Sear first, then air fry 400°F 6-8 min; trending for crispiness without oil splatter.
- Common pitfalls : Skipping rest leads to juice loss; cutting with grain makes it chewy. Multiple viewpoints agree: thermometer > timer.
- Pair with roasted veggies or chimichurri for a full meal—feeds 6 under $20 lately with beef prices steady.
TL;DR Bottom
Sear marinated London broil 2-3 min/side, bake at 400°F to 130°F (10 min total), rest, slice thin against grain for juicy perfection.
Information gathered from public forums or data available on the internet and portrayed here.