How to Cook London Broil in the Oven at 400 in 3 Simple Steps
To cook London broil in the oven at 400°F, start by marinating your steak for at least 2 hours. This step really helps boost the flavor and tenderize the meat, making your dish more delicious.
Next, preheat your oven to 400°F. While it warms up, pat the meat dry to ensure a nice crust. Then, place the steak on a baking sheet and roast it for 20-25 minutes. Don’t forget to flip it halfway through so it browns evenly on both sides.
Use a meat thermometer to check the internal temperature, aiming for about 130°F if you like it medium-rare. When it’s done, let your London broil rest for 10 minutes before slicing thinly against the grain.
This resting time locks in the juices for a tender, juicy finish. Keep practicing and you’ll find even more tips to perfect your London broil!
Preparing and Marinating the London Broil

Before you start cooking, prepare and marinate your London Broil to enhance its flavor and tenderness. Begin by creating small holes in the meat with a fork or knife; these small holes help the marinade penetrate deeply.
In a resealable bag or shallow dish, mix soy sauce, garlic, herbs, balsamic vinegar, and oil. Place the steak inside, ensuring it’s evenly coated by turning or flipping it halfway through the marinating process.
Remember to refrigerate the meat while it marinates, which should be at least two hours or overnight for the best taste. When ready to cook, take the steak out of the fridge 30 to 60 minutes beforehand to bring it to room temperature, promoting even cooking and juicier results.
Cooking the London Broil at 400°F

Once your oven reaches 400°F, drain the marinade from the London broil and pat the meat dry to guarantee a good sear. Place the steak on a baking sheet or oven-safe skillet, making sure it’s evenly spaced.
Preheat oven to 400°F, drain marinade, pat dry, and place London broil evenly on baking sheet.
Roast the London broil uncovered at 400°F, flipping halfway through for even browning. Aim for an internal temperature of about 130°F to achieve medium-rare doneness.
To cook your steak perfectly, remember to:
- Roast at 400°F for 20-25 minutes
- Flip the steak halfway through cooking
- Use a meat thermometer for internal temperature accuracy
This recipe lets you broil a tender, juicy London broil in the oven with minimal effort. It sets you up for a great resting and slicing step next.
Resting and Slicing for Best Results

After roasting your London broil to the perfect medium-rare, letting it rest for at least 10 minutes allows the juices to redistribute, making each bite tender and flavorful. During this resting time, wrap the meat loosely in aluminum foil to keep it warm while preventing moisture loss.
When you’re ready to serve, slice against the grain to cut through the meat fibers, ensuring maximum tenderness. Use a sharp knife and make thin, even cuts about 1/4 inch thick.
Proper slicing is key to keeping the steak juicy and tender, as cutting correctly breaks down the muscle fibers for easy chewing. Remember, rest and slice before serving to enjoy your London broil at its juicy, tender best.
Conclusion
Now that you know how to cook London Broil at 400°F in just three simple steps, you’re ready to impress.
Did you know that marinating your steak for at least 4 hours can improve tenderness by up to 30%? Taking the time to rest your meat after cooking guarantees those flavorful juices stay locked in.
Follow these tips, and you’ll enjoy a juicy, tender London Broil every time! Cooking London Broil in the oven at 400°F is a simple way to get great results quickly. Just remember to marinate well, cook it just right, and let it rest. This method ensures your London Broil is full of flavor and perfectly tender, making it a delicious meal for any occasion. Give it a try and enjoy a restaurant-quality steak right at home!