Juicy, flavorful, and SUPER easy to make, this broiled flank steak makes for the perfect quick but oh-so-satisfying dinner! This crowd-pleasing, budget-friendly steak is sure to become a weeknight staple.

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Keto Broiled Flank Steak

Not only is broiled flank stead lean and high in protein, but it's also incredibly versatile and can be paired with a variety of keto-friendly sides. We don’t eat a lot of red meat in our house, maybe once a week. So when we DO decide to cook steak, I have some very strict standards.

First, it’s needs to be tender. Second, it has to be flavorful.

I usually find flank steak a bit tough and bland. So the opposite of my requirements. But it’s such a great price, I wanted to find an easy recipe that could transform this cut. This is the one!

In addition to being easy to prepare and tasty (if prepared right), broiled flank steak is also a budget-friendly option. It's a relatively inexpensive cut of meat that can go a long way, especially if you're feeding a family. And since you're using the broiler instead of a grill or stovetop skillet, you won't have to worry about any extra equipment costs.

Do I Need To Marinate Flank Steak?

Marinating flank steak is the key to adding flavor and breaking down the meat. You’ll want to score the meat (I like to score it along the grain, but it’s up to you) on both sides and then let it marinate for a minimum of 30 minutes.

Some people even recommend marinating flank steak overnight!

So, do you NEED to marinate your flank steak? Technically, it will still be an edible steak if you don’t… but it will certainly be a lot better if you do.

For this recipe, I say yes, marinating is a requirement.

Is Broiled Flank Steak The Same As A London Broil?

Yes, this style of cooking your steak can also be referred to as a London Broil. London Broils typically involve a top round steak, but you can use flank steak as well.

But the name London Broil can have a bad connotation. For some, it makes them think of a tough, flavorless steak that they’d rather bury in the backyard than eat.

That’s why I prefer to refer to this recipe simply as Keto broiled flank steak. No negative preconceived notions!

Broiled Flank Steak Nutrition Benefits

As a lean cut of beef, broiled flank steak is packed with protein while still being relatively low in calories and fat. This makes it an excellent choice for those on a diet or following a keto lifestyle. Additionally, flank steak is a great source of iron, which is crucial for maintaining energy levels and overall health[*].

How Do You Score A Flank Steak?

With a sharp knife, hold the steak firmly and slice it against the grain at a slight angle. The purpose of scoring is to create small incisions that allow marinades, rubs, or seasonings to penetrate deeper into the meat, enhancing the flavor and tenderness.

Be careful not to cut too deeply, as this can cause the steak to lose juices during cooking. Aim for cuts that are about 1/4 inch deep, evenly spaced, and about an inch apart.

Once you have scored the steak, you can proceed with marinating or seasoning it as desired before cooking.

How To Make Broiled Flank Steak

To prep the flank steak for the marinade, score both sides of the meat. This will allow the marinade to really soak into the steak. I like to score it along the grain, but again, it’s up to you.

Sprinkle both sides with thyme, freshly ground pepper, and salt. Use your fingers to press the seasoning into the meat so it sticks.

In a glass baking dish or ziplock bag, add the “No Soy” sauce or coconut aminos. Add the flank steak to the dish or bag and coat all sides of the meat. Marinate for a minimum of 30 minutes. The longer, the better!

When the marinating time is almost up, preheat the oven to broil, usually 500 degrees F.

Line a baking sheet with aluminum foil for easy cleanup. You can use a baking wire rack as well, but it’s optional.

Remove the steak from the marinade, set it on your pan or rack, and broil for 8 minutes per side (or until your desired doneness).

Let the meat rest for 5 minutes, then thinly slice the meat at an angle and against the grain to serve.

What to Serve With Broiled Flank Steak

The possibilities are endless! Serve it up alongside some garlic parmesan asparagus or sautéed spinach for a healthy and delicious meal. Or, chop it up and add it to a salad with some avocado and cherry tomatoes for lunch. Another option is to use it as a base for tacos or fajitas (with low-carb tortillas, of course).

If you are like me and you enjoy a delicious dipping sauce (or slather sauce because who are we kidding), then be sure to check out this delicious horseradish sauce!

Other Dinner Recipes That You Might Like

So much meat and so little time, right? Be sure to check these amazing dinner recipes to satisfy that meat craving: Sweet Heat BBQ Ribs, Instant Pot Corned Beef, Brown Sugar Pork, Keto Top Sirloin Strips, and saving the best for last - make sure to try this delicious rack of lamb!