Marinated London Broil

This marinade is the secret to juicy, tender steaks that will take your grilling game to the next level!

My boyfriend loves to grill. But I get a little tired of burgers and chicken breasts every night—so any time I discover a new method or recipe to switch things up, I’m eager to share it with him. This marinated London broil recipe impressed both of us with its simple prep and delicious outcome.

I was quite taken by the delightful melding of savory flavors and the slight kick from the red pepper flakes in the marinade. It didn’t overpower the taste of steak, but it deepened and elevated the flavor profile way more than I thought it would! Plus, it made our relatively cheap flank steak as tender and juicy as a much higher-priced piece of meat.

And, apparently, that’s the whole point of a London broil! Despite its name, London broil has no connection to London or British cuisine. It’s a thoroughly American cooking technique developed to make lean, affordable cuts of beef more tender and flavorful. Like this recipe, the preparation typically involves marinating a lean, tougher cut of beef, then cooking it quickly over high heat and slicing it thinly against the grain. Most sources trace London broil’s roots to Philadelphia in the early 20th century. The exact reason for adding “London” to the name is unclear, but I’m guessing it was a marketing tactic to elevate the appeal of a budget-friendly meal, much like other American meat cuts named after cities or regions, like New York strip and Boston butt.

Use this marinated London broil recipe to make a restaurant-level meal without breaking the bank!

Is This Marinated London Broil Healthy?

This marinated London broil recipe is generally healthy for most well-balanced diets when consumed in moderation. The dish is high in protein (obviously) and low in carbs while providing some heart-healthy fats from the olive oil, as well as iron, potassium, and some vitamins from the steak.

It’s a keto- and low-carb-friendly recipe, but it’s also high in sodium, primarily from the soy and Worcestershire sauces. If you’re sharing it with anyone watching their sodium intake, consider opting for low-sodium soy sauce. To make the dish Whole30 compliant, sub in coconut aminos for the soy sauce and skip the Worcestershire sauce in favor of something homemade, like this Whole30 Salad Dressing.

A Tender Touch

The thing that makes this London broil marinade truly special—beyond its bold flavor—is its power to tenderize meat. The soy sauce helps the beef retain moisture, while the acid in the balsamic vinegar gently breaks down some of the meat’s proteins, resulting in a more tender texture. The longer you let the steak marinate, the more it soaks up those delicious flavors and becomes even juicier and more tender. If your goal is a steak dinner that’s tender, juicy, and irresistible, this recipe delivers!

Serving Suggestions

A marinated London broil marinade is the perfect centerpiece to any meal. Pair it with a simple potato dish, like these Smashed Potatoes, and your favorite vegetables, like these Grilled Brussels Sprouts, for a deliciously balanced weeknight dinner.

If you’re looking to go a little fancier for a dinner party, consider pairing London broil with Grilled Squash, Lyonnaise Potatoes, and a Healthy Broccoli-Apple Salad With Greek Yogurt. A pitcher of White Sangria and this gorgeous Lemon Meringue Pie will leave your guests deeply satisfied!

Recipe