Juicy Alton Brown London Broil: 5 Secrets

September 30, 2025
Written By Zoe Thompson

Zoe Thompson is the founder and head recipe developer at Kitchen Slang. Growing up in a lively Chicago-area home, she learned that great food is all about comfort and connection. Her time working in a bustling bistro taught her the "slang" of professional chefs—the shortcuts and secrets to making incredible food without the fuss. On Kitchen Slang, Zoe acts as a "recipe translator," turning pro techniques into simple, delicious meals for the American home cook. Her mission is to deliver "Real talk for real good food," proving that anyone can cook like a pro once they know the lingo.

There’s just something about a perfectly cooked steak, right? That moment when you slice into it and see that beautiful medium-rare center, juices flowing… it’s pure magic. But sometimes, those fancy steakhouse cuts can feel a little intimidating to tackle at home. That’s where an Alton Brown London broil comes in, folks! We’re talking a steak that’s bursting with flavor, incredibly tender thanks to a killer marinade, and cooked to perfection under the broiler. It’s honestly one of those recipes that makes you feel like a culinary pro, and that’s exactly what we’re all about here at Kitchen Slang. We break down those chef secrets, like Zoe Thompson does, so you can just cook with confidence. You can read more about our whole kitchen philosophy and how we make things accessible!

Why You’ll Love This Alton Brown London Broil

Seriously, why this recipe? Let me count the ways:

  • It’s ridiculously easy – perfect for those nights you want a fantastic dinner without a fuss.
  • The flavor is out of this world! That marinade really works some serious magic.
  • Super tender! We’re talking restaurant-quality results right from your own oven.
  • It’s a winner for both a quick weeknight meal or when you want to impress guests.

Ingredients for Your Marinated London Broil

Alright, let’s gather our goodies! For this amazing marinated London broil, you’ll need:

  • A good-sized London broil steak, about 2 to 3 pounds.
  • For the marinade:
  • 1/2 cup soy sauce (adds that savory depth!)
  • 1/4 cup good olive oil
  • 1/4 cup red wine vinegar (for a little zip)
  • 2 cloves of garlic, minced up nice and fine
  • 1 tablespoon Worcestershire sauce (don’t skip this, it’s key!)
  • 1 teaspoon black pepper
  • 1 teaspoon dried thyme

How to Prepare Your Alton Brown London Broil

Now for the fun part – turning those simple ingredients into an absolutely killer steak dinner! It’s all about a few key steps that make a huge difference. Trust me, getting that deep flavor and perfect tenderness for your Alton Brown London broil is totally achievable.

Crafting the Marinade for Your London Broil

First things first, let’s whip up that magical marinade. Just grab a bowl and whisk together the soy sauce, olive oil, red wine vinegar, those minced garlic cloves, the Worcestershire sauce, pepper, and thyme. Give it a good whisk until everything is nicely combined. That’s it! Seriously, it’s that easy to get started.

Marinating the Steak for Maximum Flavor

Now, take your London broil and pop it into a sturdy zip-top bag or a shallow dish. Pour that gorgeous marinade all over it, making sure every single inch of that beautiful cut of meat is coated. Now, let it hang out in the fridge. You can get away with at least 4 hours, but for the best, most flavorful, and tender marinated London broil experience? Overnight is your friend. The marinade doesn’t just add flavor; it actually helps to break down those tougher muscle fibers, making your steak practically melt in your mouth.

Broiling Your Alton Brown London Broil to Perfection

Okay, broiler time! Make sure it’s preheated to HIGH – you want it screaming hot. Take that steak out of the marinade, but don’t forget to discard the marinade; we don’t want to cook with that. Now, and this is super important, pat that steak THOROUGHLY dry with paper towels. A dry surface will give you a better sear, which means way more flavor! Pop it on your broiler pan and get it under that heat. For a perfect medium-rare on your Alton Brown London broil, aim for about 5 to 7 minutes per side. But honestly, the best way to know for sure is to use a meat thermometer. You’re looking for about 130-135°F (54-57°C) for medium-rare.

Close-up of perfectly cooked Alton Brown London broil, sliced to reveal a tender, pink interior and a seared crust. SAVE

The Crucial Resting Period for Juicy Steak

Once it’s looking perfectly bronzed and cooked to your liking, pull that steak out from under the broiler. Now, resist the urge to slice into it immediately! It’s super tempting, I know. But you HAVE to let it rest. Tent it loosely with foil and let it sit for at least 10 minutes. This step is non-negotiable for juicy steak! It allows all those delicious juices to redistribute throughout the meat. If you cut it too soon, all that goodness just runs onto the cutting board. Sad story.

Slicing Against the Grain for Tenderness

Finally, the grand finale! You’ve rested your steak, and now it’s time to slice. Look closely at the steak and you’ll see the muscle fibers running in one direction – that’s the ‘grain.’ You want to slice thinly, and perpendicular to those lines, or ‘against the grain.’ This shortens those fibers, making each bite incredibly tender and easy to chew. It’s the secret weapon for making any cut of steak feel super luxurious.

Tips for an Easy Steak Dinner

Look, we all want fantastic food without running ourselves ragged in the kitchen, right? This recipe is already a champ for an easy steak dinner because the marinating does so much of the heavy lifting. My biggest tip? Make sure your broiler is good and hot before the steak even *thinks* about going under it. Also, don’t forget to pat that steak super dry after marinating – seriously, it makes all the difference for a good sear! Planning your side dishes ahead of time, like a quick salad or some roasted veggies, can also make the whole meal feel super chill.

Ingredient Notes and Substitutions

Okay, let’s chat about a couple of things in this marinade that you might wonder about. First off, the soy sauce. It’s the backbone for that deep, savory flavor, but if you’re watching your sodium, you can totally use a low-sodium soy sauce or even tamari if you’re going gluten-free. The red wine vinegar gives us a nice bit of tang; if you don’t have any red wine vinegar on hand, apple cider vinegar is a pretty decent swap. Just don’t go crazy with it, a little goes a long way! And garlic? Fresh is best, but if you’re in a pinch, about 1 teaspoon of garlic powder can work in a pinch, though you’ll miss that punchy fresh flavor.

How to Broil Steak Perfectly Every Time

Alright, let’s get down to the nitty-gritty of how to broil steak like a pro. It’s actually pretty straightforward, but a few little tricks make all the difference between a decent piece of meat and an absolute showstopper. First off, temperature is key! Make sure that broiler is HOT – I’m talking nice and hot before your steak even gets close. You want that intense radiant heat to give you a beautiful, flavorful sear on the outside. The placement of your steak on the broiler pan also matters. Generally, you want the steak about 3 to 5 inches away from the heat source. Too close, and you’ll char the outside before the inside cooks. Too far, and you won’t get that nice crust.

Nutritional Information for Alton Brown London Broil

Now, while this Alton Brown London broil is more about flavor and tenderness than counting calories, it’s always good to have an idea of what you’re eating. Keep in mind these numbers are just estimates, and they can totally change depending on the cut of steak you use and the exact ingredients you toss into that delicious marinade. Still, it gives you a good ballpark!

Per serving (about 4 oz):

  • Calories: 350
  • Fat: 20g
  • Saturated Fat: 6g
  • Unsaturated Fat: 14g
  • Trans Fat: 0g
  • Protein: 38g
  • Carbohydrates: 3g
  • Fiber: 0g
  • Sugar: 2g
  • Cholesterol: 120mg
  • Sodium: 600mg

Frequently Asked Questions About London Broil

Got questions about this amazing steak? I’ve got you covered!

What is the best way to marinate London broil?

For the absolute best flavor, pop your London broil in a good marinade (like the one we made!) for at least 4 hours, but honestly, overnight is even better. Make sure it’s fully coated!

How long should London broil rest after broiling?

Don’t skip this step! Let your steak rest, tented loosely with foil, for at least 10 minutes. It’s crucial for keeping all those juicy flavors locked inside.

Can I grill London broil instead of broiling?

Absolutely! Grilling works fantastic for this cut too. Just preheat your grill to high heat, get those grates clean, and sear it for about the same amount of time as broiling. You’ll get a lovely char!

Share Your Alton Brown London Broil Creation

Alright, now that you’ve made this fantastic Alton Brown London broil, I absolutely *need* to hear about it! Did it turn out amazing? Did your family devour it I bet they did! It’s so rewarding to see you all trying these recipes and making them your own. Drop a comment below, give it a star rating if you loved it, and if you snap any pics, definitely tag us on social media. You can also reach out via our contact page if you have any questions or just want to brag about your culinary success. Happy cooking!

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Alton Brown London Broil

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A juicy and flavorful London broil marinated and broiled to perfection, sliced against the grain for a tender steak dinner.

  • Author: zoe-thompson
  • Prep Time: 15 min
  • Cook Time: 15 min
  • Total Time: 4 hr 30 min
  • Yield: 4-6 servings 1x
  • Category: Dinner
  • Method: Broiling
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 23 lb London broil steak
  • 1/2 cup soy sauce
  • 1/4 cup olive oil
  • 1/4 cup red wine vinegar
  • 2 cloves garlic, minced
  • 1 tablespoon Worcestershire sauce
  • 1 teaspoon black pepper
  • 1 teaspoon dried thyme

Instructions

  1. Combine soy sauce, olive oil, red wine vinegar, minced garlic, Worcestershire sauce, black pepper, and thyme in a bowl. Whisk to combine.
  2. Place the London broil steak in a resealable plastic bag or shallow dish. Pour the marinade over the steak, ensuring it is fully coated.
  3. Marinate the steak in the refrigerator for at least 4 hours, or preferably overnight.
  4. Preheat your broiler to high.
  5. Remove the steak from the marinade and discard the marinade. Pat the steak dry with paper towels.
  6. Place the steak on a broiler pan.
  7. Broil for 5-7 minutes per side for medium-rare, or to your desired level of doneness. Use a meat thermometer to check the internal temperature.
  8. Remove the steak from the broiler and let it rest for 10 minutes before slicing.
  9. Slice the steak thinly against the grain for maximum tenderness.

Notes

  • For best results, marinate the steak overnight.
  • Resting the steak after broiling is crucial for juicy results.
  • Slicing against the grain ensures a more tender bite.
  • Consider this recipe as part of your meal planning for an easy steak dinner.

Nutrition

  • Serving Size: 4 oz
  • Calories: 350
  • Sugar: 2g
  • Sodium: 600mg
  • Fat: 20g
  • Saturated Fat: 6g
  • Unsaturated Fat: 14g
  • Trans Fat: 0g
  • Carbohydrates: 3g
  • Fiber: 0g
  • Protein: 38g
  • Cholesterol: 120mg

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