How to Cook London Broil in the Oven

Learn how to cook London Broil in the oven or slow cooker for a delicious, hearty dinner the whole family will love!

Let’s cover the basics of a dish called London broil, including how to cook London broil in the oven!

London broil is not a cut of beef, but is in fact the method of cooking steak. This recipe first became popular in the United States despite the name’s suggested origins.

sliced steak on a cutting board. Black background. Top view. — (Vladimir Mironov via iStock Photo)

London broil is a lean but tough steak that is marinated and then grilled or broiled. The steak itself can be anything from flank steak to top round and is generally a cut between 1 to 4 inches in thickness. Usually, the steak for a London broil comes from the sirloin or round sections of beef.

Marinating a London broil steak helps tenderize it, and cooking it to medium doneness at most will prevent it from being too tough. London broil is very flavorful and is an excellent choice for people looking to enjoy affordable steak without compromise.

Can You Put London Broil in a Crock Pot?

Yes, you can put London broil in a crock pot! London broil in a slow cooker is an excellent way to yield a tender and juicy steak.

To make the most of preparing your roast in the crock pot, you can sear the meat first to enhance the flavor.

Be mindful that a slow cooker that isn’t monitored can easily overcook the meat, making it dry and tough. Cook on low for 8-10 hours or high for 4-5. Like most roasts, low and slow is the best method, so aim for a longer cooking time when possible.

Before cooking, marinate the beef for 2-3 hours per inch of meat. Try this simple and flavorful marinade recipe:

¼ C balsamic vinegar
¼ C soy sauce
5 Tbsp olive oil
2 Tbsp Worcestershire sauce
1 Tbsp brown sugar
1 crushed garlic clove
¼ tsp black pepper
¼ tsp salt

Place all ingredients in a Ziploc bag along with the scored steak and shake to coat thoroughly. Allow to rest in the fridge.

Pot Roast Seasoning Guide Picture — (bhofack2 via iStock Photo)

Step-by-step instructions for the perfect slow cooker London broil:

Heat a small amount of olive oil in a large skillet over medium-high heat. Sear the marinated beef for 1-2 minutes on all sides.
Add 1 cup beef broth and ¼ cup port wine (wine is optional) to your slow cooker pot, along with optional sides such as a bay leaf, 1 ½ lbs baby potatoes, ½ to ¾ lbs chopped or baby carrots, and salt and pepper. If you did not marinate the beef, you can add flavor to your meat by flavoring the liquid.
Add a packet of onion soup mix to your liquids and stir well before adding your vegetables and meat. Place the beef on top of the veggies. Cover and cook on low for 8-10 hours or high for 4-5 hours, regularly monitoring temperature and doneness.
After your beef is fully cooked, allow it to rest on a cutting board. Spoon all vegetables into a serving dish and leave liquids in the crock pot.
To make a simple gravy, combine 1 tablespoon cornstarch and 2 tablespoons cold water in a bowl until combined to form a slurry. Stir the slurry into the liquids and gently stir. Turn the slow cooker temp to high and cook 15-20 minutes to thicken the gravy.
Once the gravy is ready, carve the roast.
Serve the roast, vegetables, and gravy and enjoy!

Homemade Cooked Skirt Steak with Chimichurri Sauce and Spices — (bhofack2 via iStock Photo)

How to Cook London Broil in the Oven or Grill

Don’t want to cook your London broil in the slow cooker? No problem!

You can also prepare a London broil on the grill (meat only) or in the oven.

If you cook it in the oven, set your oven to 350°F and cook the steak for 15-20 minutes, depending on your desired level of doneness.

No matter how you prepare your London broil, the best method for preparation will always involve marinating the steak, reverse searing the steak, and cutting the meat against the grain to make it more tender and easier to chew.

Grilled Medium Rare top sirloin beef steak or rump steak on a steel tray. Dark background. Top view. — (Vladimir Mironov via iStock Photo)

How Much London Broil Per Person

Now that you know how to cook London broil in the oven, grill, or slow cooker, let’s get into the nitty-gritty. The true nightmare of a host or hostess is guests who go home hungry after a well-thought-out meal.

To make sure you have enough London broil for your guests, plan on each adult eating ½ lb (or 8 oz) of meat. To yield leftovers, plan upward for ¾ lb or 12 oz per person. For children 12 and under, estimate a quarter pound or 4 oz of meat.

While you might plan to prepare your London broil with potatoes and carrots, as shown above, you may want to offer a variety of additional or alternative sides. Let’s cover what you can offer with your dinner!

What to Serve with London Broil

Meat and potatoes is a term coined for a reason — people just love it! If you didn’t cook your potatoes with your meat, or if you did but you also want to offer more on the side, we’re here to help!

Roasted potatoes with bay leaves will easily complement the flavors in your London broil. Here are some other perfect potato recipes to pair with your London broil:

Carrots are a commonly prepared vegetable in a London broil. Check out these carrot recipes that will help you serve them in a whole new way alongside your flavorful meat:

Mashed Carrots and Turnips Image — (Erin S.)

Don’t limit your dinner to the tried and true — mix things up with these side dishes and sauces that will add so much variety to your dinner table!