London Broil Recipe Oven: Marinated Steak With Perfect Sear

I’ve perfected a method for achieving a perfectly seared London broil in the oven, with juicy, tender results every time. The key starts with a simple but flavorful marinade that transforms affordable top round steak into something extraordinary.

This approach uses high heat to develop a deep, caramelized crust while keeping the inside remarkably tender. A quick broil finishes the job, ensuring that signature restaurant-quality sear without the stovetop mess.

The marinade infuses the meat with bold, savory notes, and the oven method guarantees even cooking throughout. Pair it with roasted potatoes or a fresh green salad for a complete meal.

Ready to elevate your steak game? This technique delivers consistent, impressive results with minimal effort.

Ingredients for London Broil Recipe Oven

Affordable top round steak gets a bold marinade for restaurant-quality results every time.

The steak is everything here. Top round London broil cut (about 1.5 inches thick) delivers the right texture—lean but tender when sliced thin against the grain. Source from Whole Foods or Costco for consistent quality. The soy sauce should be low-sodium to control seasoning; Kikkoman or San-J are reliable brands. Avoid pre-cut steaks if possible—they often lack the marbling needed for optimal flavor.

No Worcestershire? Additional soy sauce plus a dash of fish sauce (if dietary restrictions allow) approximates the depth. Balsamic vinegar at half the amount replaces red wine vinegar, though the flavor profile shifts slightly. Fresh herbs can substitute dried at three times the quantity. The brown sugar can be omitted for a less caramelized crust, but it’s worth including for that signature sear.

Marinate the steak for 4-12 hours for maximum flavor penetration. Store raw steak in the fridge for up to 3 days before cooking. Leftovers keep 4-5 days refrigerated—slice thin and reheat gently to preserve tenderness.

Step-by-Step Instructions for London Broil in the Oven

This method delivers a perfectly tender, flavorful steak with a beautiful crust every time.

Step 1: Create the Flavor-Packed Marinade

In a medium bowl, whisk together the 0.5 cup soy sauce, 0.25 cup olive oil, 2 tbsp Worcestershire sauce, and 2 tbsp red wine vinegar until fully combined. These liquids form the backbone of your marinade, balancing saltiness with acidity.

Add the 1 tbsp Dijon mustard, 1 tbsp brown sugar, and 1 tbsp lemon juice, whisking until the sugar dissolves. Then stir in the 1 tsp dried rosemary, 1 tsp dried thyme, 1 tsp kosher salt, and 1 tsp black pepper. The herbs should be crushed between your fingers to release their essential oils.

Step 2: Marinate the Top Round Steak

Place the 2 lb top round steak in a resealable plastic bag or shallow dish. Pour the marinade over the steak, ensuring it’s completely submerged. Add the 4 cloves garlic cloves (minced) to the marinade, distributing them evenly around the steak.

Seal the bag or cover the dish and refrigerate for at least 4 hours, or preferably overnight. This extended marinating time allows the flavors to penetrate deeply into the meat. For best results, turn the steak every 2 hours to ensure even distribution of the marinade.

Step 3: Sear and Transfer to Oven

Preheat your oven to 400°F. Remove the steak from the marinade (reserve the marinade) and pat it dry with paper towels. This is crucial for achieving a proper sear. Heat an oven-safe skillet over high heat until very hot.

Add the steak to the hot skillet and sear for 2-3 minutes per side until a deep brown crust forms. The steak should release easily from the pan when it’s ready to flip. Pour ¼ cup of the reserved marinade into the skillet, then transfer it to the preheated oven.

Step 4: Roast to Desired Doneness

Roast the steak in the oven for 10-15 minutes, depending on your preferred level of doneness. For medium-rare, aim for an internal temperature of 135°F; for medium, 145°F. Use a meat thermometer to check the temperature in the thickest part of the steak.

Baste the steak with the pan juices every 5 minutes during roasting. This keeps the meat moist and adds layers of flavor. The steak is done when it reaches your desired internal temperature and the juices run clear when pierced with a knife.

Step 5: Rest and Slice Against the Grain

Transfer the steak to a cutting board and let it rest for 10-15 minutes before slicing. This allows the juices to redistribute throughout the meat, ensuring a moist and flavorful result. Tent the steak loosely with foil to keep it warm.

Slice the steak thinly against the grain for maximum tenderness. The grain runs in one direction through the meat—cut perpendicular to these lines. This shortens the muscle fibers, making each bite easier to chew. Serve immediately with any remaining pan juices spooned over the top.

Troubleshooting london broil recipe oven

Uneven Cooking

If one end is more done than the other, your steak may be too close to the broiler. Move the rack to the middle position for even heat distribution. A thick 1.5-inch steak needs consistent exposure to avoid dry edges.

Weak Sear

Pat the steak completely dry before searing—excess moisture steams instead of browns. Heat your oven-safe skillet for 5 minutes first to ensure it’s screaming hot. I use a Lodge cast iron for reliable results. 🔥

If using stainless steel, don’t move the steak for at least 2 minutes to develop a proper crust. The steak should release naturally when ready to flip.

Tough Texture

Slicing with the grain instead of against it creates chewy bites. Always cut perpendicular to the muscle fibers in ¼-inch slices. Let the steak rest for the full 10-15 minutes before slicing.

Dry Results

Overcooking is the main culprit. Pull the steak at 130°F for medium-rare—it rises 5-10°F while resting. Baste with pan juices every 5 minutes during roasting to lock in moisture. 💡

Bland Flavor

Marinate for the full 12 hours for maximum penetration. Use low-sodium soy sauce so you can control seasoning. Add an extra 1 tsp kosher salt to the marinade if needed.

Frequently Asked Questions