Killer London Broil | Renee's Kitchen Adventures

Wednesday, April 24, 2019

Killer London Broil

Fire up the grill for a delicious and easy London Broil recipe. Killer London Broil, made with round steak, is marinated in a delicious London Broil marinade for extra flavor then grilled up to perfection and sliced thinly. It's a keeper!

Killer London Broil by Renee's Kitchen Adventures sliced thinly and cooked to medium rare, garnished with fresh parsley

What is round steak? 

Round is a cut of beef from the rear leg of the cow. Round is categorized into cuts including Eye of Round, Bottom Round, and Top Round. A London Broil is a Top Round steak or roast, depending on its thickness. You'll find most Top Round Steaks, cut for London Broil are about 2 inches thick.

It is a lean and economical cut of beef and is perfectly suited for marinating and then broiling or grilling. Because it's so lean, London Broil is best cooked to medium rare doneness (to about 130 degrees F internal temperature) and sliced thinly against the grain.

I love cooking with round steaks, because they are good for my waistline and good for my wallet! You get a nice lean protein packed meal when you choose round steak. Killer London Broil is a fabulous round steak recipe you are going to love! 

Killer London Broil by Renee's Kitchen Adventures ready to slice, still whole, on plate with parsley garnish

Easy London Broil Marinade

I love this easy London Broil marinade. Although 6 hours in the marinade will do, I prefer to let it marinade overnight for best flavor.  And full of flavor it is!

The original marinade recipe comes from the Hard Rock Cafe, and I think it is probably one of the best London Broil marinades I have found. The recipe book I grabbed it from is quite old, and I don't even think this is an option on their menu any longer, but this London Broil marinade is a real winner and worthy of never being retired. 

Not only is this marinade great on London Broil, it's also wonderful on chicken and pork too!

Killer London Broil by Renee's Kitchen Adventures sliced and ready to eat

Easy London Broil Recipe

Killer London Broil is an easy London Broil recipe. The hardest part about this recipe for London Broil is the timing. You do need to do a little planning ahead, for the marinade. Six hours is great, but overnight is even better. This marinade isn't very acidic, so there's no worry of letting it sit too long in the marinade and having the edges "cook" or the texture get mushy. With that said, for safety, I wouldn't recommend marinating it for more than overnight. 

Killer London Broil by Renee's Kitchen Adventures on white plate resting

London Broil, Round Steak, round steak recipes, easy London Broil marinade
main course,beef
Yield: 8 servings
Author: Renee Paj
Killer London Broil

Killer London Broil

Prep time: 8 HourCook time: 20 MinTotal time: 8 H & 20 M
Marinated round steak is grilled to perfection then sliced thinly against the grain for a meal that's easy on your waistline and your budget!


  • 2- 2 1/2 pound top round steak for London Broil, trimmed
  • 2 TBSP dark brown sugar
  • 1 TBSP beef base concentrate ( bouillon)
  • 1 tsp. minced garlic
  • 1/4 cup canola oil
  • 1 TBSP fresh ground black pepper
  • 3 TBSP low sodium soy sauce
  • 1 tsp salt
  • 1 tsp onion powder
  • 1/2 cup warm water


  1. Mix warm water with beef base and brown sugar, stir until dissolved. Add all other ingredients, except roast, and mix well.
  2. Put roast in gallon sized zipper bag and pour marinade on top. Seal bag and refrigerate for at least 6 hours or overnight. When ready to grill, remove from marinade and pat excess marinade off meat. Discard remaining marinade.
  3. Grill over medium-high heat until roast is med-rare (130 degrees F internal temperature). Cover with foil and allow to rest for 10 minutes before slicing. Slice against grain at an angle


Nutritional information is an estimate

Nutrition Facts



Fat (grams)

22.41 g

Sat. Fat (grams)

6.44 g

Carbs (grams)

3.97 g

Fiber (grams)

0.31 g

Net carbs

3.65 g

Sugar (grams)

2.76 g

Protein (grams)

48.76 g

Sodium (milligrams)

820.12 mg

Cholesterol (grams)

145.41 mg

More London Broil Recipes you'll love!

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Killer London Broil by Renee's Kitchen Adventures pin for Pinterest

*Note: This recipe for Killer London Broil first appeared on Renee's Kitchen Adventures in August 2012. I've updated the post to include more information and republished it because it's an excellent recipe that I think everyone should know about! The recipe hasn't changed from the original post.


  1. Will be adding this to the list! Thank you!!!

  2. This is why I could never be vegetarian. You did such a fantastic job making sure the meat was perfectly cooked AND juicy :) YUM

  3. OH man....I wish i had this for dinner tonight! Looks great! :)

  4. Hi Renee,

    Your Killer London Broil does in face look...killer! I know the readers and viewers over here at Mr. Food would totally go for something like this. We’d love for you to submit a similar recipe to The Search for the Ultimate Weeknight Meal, offering a grand-prize to one lucky blogger who will tape a segment to air on national TV! If you're interested, check out our contest page for more details.

    Alexis Franzi
    Editor, Mr. Food

  5. That does look great! I am not much of a beef eater but I bought a premarinated piece of beef at Trader Joes the other day. Hubby grilled it up and we loved it! It was nice for a change. This recipe sounds so good and easy too. I like easy.

  6. Love London Broil - its on sale at my store about every other week - I'll have to give this one a try!

  7. We love to grill out, especially in warm weather. I love quality beef and the sound of this marinade has me drooling. We will be trying this one, sometime soon! Thanks for the great recipe!

  8. Had an okay flavor, but not very intense. Prefer the flavor of the dry packaged marinade from McCormick (?)(if I can find it). This just needs SOMEthing: more soy sauce?? I used 3 packets of low-sodium beef bouillon- maybe that was the problem. Also used 1 Large clove of garlic, but no pepper because I don't like it. Marinated it overnight.

    1. You definitely need the salt and pepper in this recipe. :)

  9. My family loves to eat this recipe during the bbq season. Thanks so much for sharing.

  10. Would it be possible to use beer rather than water in the Marinade Mix to get a somewhat different flavor?

  11. I made this for hubby and me and it's the BEST roast I've ever had. Just another on to marinade for company tomorrow. Only difference I did was put it in my Ninja Air fryer on the pressure cook method. Yummy AND fast!

    1. Hi! Thanks so much for your review! I'm so happy you love this recipe. I love the idea of cooking in the air fryer! I'm really loving the ease of cooking with mine too!

  12. I only seasoned my london broil with salt and pepper and montreal steak seasoning. I used it to put in beef vegetable soup. I browned it in butter and olive oil then added it to the soup broth and cooked it for about 2 hrs. Then added my Soup Vegetables and cooked another 45 minutes. the london broil is super tender but has no flavor to it. What can I do to add flavor to the meat only.

    1. I wouldn't use this cut of meat (london broil - round) for soup. It's quite lean and this is why marinating it with the recipe above helps boost flavor. For soup, I would recommend using chuck. It will naturally have more flavor and you can cook it just as you mentioned above for your soup. Hope this helps.


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