Learning how to cook london broil in an air fryer offers a fast track to a caramelized crust and a juicy, medium-rare center. This method is a game-changer for busy weeknights, delivering a flavorful steak with minimal hands-on time and easy cleanup.
If you have an air fryer and a good piece of meat, you are minutes away from a fantastic meal. This guide will walk you through every step, from selecting the right cut to achieving perfect doneness.
You will get consistent, restaurant-quality results at home.
how to cook london broil in an air fryer
The core process is straightforward, but success hinges on a few key details. Proper preparation and timing are everything when using the intense, concentrated heat of an air fryer.
We will break it down into simple, actionable steps. First, let’s talk about the star of the show: the London broil itself.
Understanding London Broil: It’s Not What You Think
Many people are surprised to learn that “London broil” is not a specific cut of beef. It is actually a cooking method. Traditionally, it refers to marinating a lean, tougher cut of beef and then broiling or grilling it, followed by slicing it thinly against the grain.
Over time, the name became associated with the cuts commonly used. Knowing which cut you have is crucial for cooking it properly in any appliance, including your air fryer.
Common Cuts Sold as London Broil
At the grocery store, you will typically find two main cuts labeled as London broil.
- Top Round Steak: This is the most common. It is lean, affordable, and benefits greatly from marinating.
- Flank Steak: Slightly more tender and flavorful than top round, but still lean. It also requires marinating and precise slicing.
Both of these cuts are from well-exercised muscles, making them lean and potentially tough if not handled correctly. The air fryer’s rapid air circulation is excellent for creating a great sear while keeping the interior juicy, provided you follow the guidelines for these lean cuts.
Essential Tools and Ingredients
You do not need much beyond your air fryer and the steak. Having the right basic tools will make the process smoother.
- A Good Air Fryer: Any model will work, but basket styles are most common. Preheat is essential.
- Meat Thermometer: This is non-negotiable for perfect doneness. A good instant-read thermometer is your best friend.
- Sharp Knife: For trimming and, most importantly, slicing the cooked steak.
- Cutting Board: Preferably one with a groove to catch juices.
- Mixing Bowl or Bag: For marinating the steak.
For the steak itself, a simple approach often works best.
- 1.5 to 2 lb London Broil (top round or flank steak)
- 1-2 tablespoons high-smoke-point oil (avocado, canola, or vegetable oil)
- Kosher salt and freshly ground black pepper
- Your choice of dry rub or wet marinade ingredients (detailed below)
Step 1: Preparing and Marinating Your Steak
Preparation is 80% of the battle. Taking time here ensures a tender, flavorful result.
To Marinate or Not to Marinate?
For lean cuts like top round or flank, marinating is highly recommended. It adds flavor and, with the right ingredients, can help tenderize the meat slightly. A simple dry brine with salt can also work wonders.
If you are short on time, a generous seasoning with salt, pepper, and a robust dry rub will still yield a tasty crust.
A Simple, Effective Marinade Recipe
This basic marinade adds flavor without overpowering the beef. Combine the following in a bowl or zip-top bag:
- 1/4 cup soy sauce or coconut aminos
- 2 tablespoons olive oil
- 2 tablespoons red wine vinegar or balsamic vinegar
- 3 cloves garlic, minced
- 1 teaspoon dried herbs (like thyme, rosemary, or Italian seasoning)
- 1/2 teaspoon black pepper
Place the steak in the bag or a shallow dish, pour the marinade over it, and ensure it’s coated. Seal or cover and refrigerate for at least 2 hours, or ideally overnight. Do not marinate for more than 24 hours, as the acid can start to break down the texture too much.
The Dry Brine Alternative
For a more concentrated beef flavor, try a dry brine. Pat the steak completely dry with paper towels. Generously season all sides with kosher salt (about 1 teaspoon per pound).
Place it on a rack on a baking sheet and leave it, uncovered, in the refrigerator for 4 to 24 hours. This draws out moisture, which then gets reabsorbed, seasoning the meat deeply and helping it retain juices during cooking.
Step 2: Preheating and Prepping the Air Fryer
Do not skip the preheat. A hot air fryer is critical for that immediate sear which locks in juices.
- Remove the steak from the refrigerator about 30 minutes before cooking. This allows it to come closer to room temperature, promoting even cooking.
- While it rests, preheat your air fryer to 400°F (200°C). This usually takes 3-5 minutes.
- Pat the steak dry again thoroughly. Moisture is the enemy of browning. If you used a wet marinade, this step is especially important.
- Lightly brush or spray both sides of the steak with a high-smoke-point oil. This promotes browning and prevents sticking.
- Apply your final seasoning. If you dry-brined, just add pepper and any other dry herbs now. If you marinated, you can add a sprinkle of coarse salt and pepper for extra crust.
Step 3: The Cooking Process
Now for the main event. Cooking times can vary based on your air fryer model, the steak’s thickness, and your desired doneness.
Basic Cooking Instructions
- Once preheated, place the London broil in the air fryer basket in a single layer. Do not overcrowd; air needs to circulate.
- Cook at 400°F (200°C). For a 1.5-inch thick steak aiming for medium-rare, start with 12 minutes.
- Flip the steak carefully at the halfway mark (around 6 minutes). This ensures even browning on both sides.
- Begin checking the internal temperature with your meat thermometer about 3-4 minutes before the expected finish time.
Air Fryer London Broil Time and Temperature Chart
Use this chart as a starting guide. Always trust your thermometer over a timer.
- Rare (125°F): 9-11 minutes total
- Medium Rare (135°F): 12-14 minutes total
- Medium (145°F): 14-16 minutes total
- Medium Well (150°F): 16-18 minutes total
Remember, the steak’s temperature will rise 5-10 degrees while resting, a critical final step. Remove it from the air fryer when it is 5-10 degrees below your target final temperature.
Step 4: Resting and Slicing
This might be the most important step you are tempted to skip. Do not.
- When the steak reaches your desired temp, carefully remove it from the air fryer basket and place it on a clean cutting board.
- Tent it loosely with aluminum foil and let it rest for a full 10 minutes. This allows the juices, which have been driven to the center by the heat, to redistribute throughout the entire steak. If you slice immediately, all those precious juices will run out onto the board, leaving you with a dry steak.
- After resting, identify the direction of the muscle fibers (the “grain”). Using a sharp knife, slice the steak thinly, always cutting perpendicular (across) the grain. This shortens the muscle fibers, making each piece much more tender to eat.
Pro Tips for Air Fryer Success
A few extra insights can take your results from good to great.
- Check Hot Spots: Learn your air fryer’s hot spots. You might need to rotate the steak (not just flip) for completely even cooking.
- Avoid Overcrowding: If your steak is very large or your basket small, cut it in half to ensure proper air flow. Crowding leads to steaming.
- Use the Right Oil: Light sprays of avocado or canola oil work better than olive oil for high-heat searing in the air fryer.
- Consider a Rack: If your steak is very thin, using a rack inside the basket can lift it and improve circulation underneath.
Flavor Variations and Serving Suggestions
London broil is a versatile canvas for flavors. Once you master the basic method, try these ideas.
Dry Rub Combinations
- Classic Steakhouse: Salt, pepper, garlic powder, onion powder, and a touch of smoked paprika.
- Coffee-Chili Rub: Finely ground coffee, chili powder, brown sugar, cumin, salt, and pepper.
- Herb Crust: Dried rosemary, thyme, oregano, crushed fennel seed, salt, and pepper.
How to Serve Your London Broil
Thinly sliced London broil is perfect for so many meals. Here are a few ideas:
- As a Main: Serve the slices with classic sides like air-fryer roasted potatoes, a crisp green salad, or sautéed green beans.
- In Salads: Slice it cold or warm over a hearty salad with blue cheese, red onion, and a vinaigrette.
- For Sandwiches: Pile slices on a crusty roll with horseradish sauce, arugula, and caramelized onions.
- In Tacos or Wraps: Use the slices as a filling with fresh salsa, avocado, and lime crema.
Troubleshooting Common Issues
Even with careful planning, things can happen. Here’s how to fix common problems.
Steak is Too Tough
This usually has three potential causes: the cut was very lean and not marinated, it was not sliced thinly enough against the grain, or it was overcooked. Ensure you are using a sharp knife and cutting across the grain. For next time, consider a longer marinate or a dry brine.
Steak is Overcooked
An air fryer’s heating elements are close and powerful. Start checking the temperature early. Remember that carryover cooking will add degrees. For a thinner steak, reduce the temperature to 375°F to give the inside more time to cook before the outside over-browns.
Not Browning Enough
This is often due to moisture on the steak’s surface or insufficient preheating. Always pat the steak completely dry before adding oil and seasoning. Make sure your air fryer has reached the full 400°F before adding the meat. A light extra spray of oil on the surface can also help.
FAQ: Your London Broil Air Fryer Questions Answered
Can I cook a frozen London broil in the air fryer?
It is possible but not ideal. For food safety and even cooking, it is best to thaw the steak completely in the refrigerator first. Cooking from frozen will result in an overcooked exterior before the interior is done. If you must, add 50% more cooking time and use a lower temperature (around 350°F) to start, then increase heat at the end to brown.
What is the best temperature for London broil in air fryer?
A high temperature of 400°F (200°C) is generally best. This quickly sears the outside, creating a flavorful crust while keeping the inside juicy. For very thin cuts (under 1 inch), you might try 375°F to prevent the outside from burning before the inside reaches your desired doneness.
How do I keep it from getting dry?
The keys to preventing dryness are: 1) Do not overcook it. Use a thermometer. 2) Always let it rest for 10 minutes after cooking. 3) Slice it thinly against the grain. 4) Consider using a marinade or dry brine, which helps the meat retain moisture.
Can I use this method for other cuts of steak?
Absolutely. The air fryer is excellent for many steaks. Thicker cuts like ribeye or strip steak may need a slight adjustment in time, but the high-heat principle remains the same. Just be mindful of the fat content; very fatty cuts can cause more smoke in the air fryer.
How long does leftover cooked London broil last?
Store leftover sliced steak in an airtight container in the refrigerator for 3 to 4 days. You can reheat it gently in the air fryer at a lower temperature (300°F) for a few minutes, but it is also excellent cold in salads or sandwiches. Avoid microwaving, as it can make the meat rubbery.
Conclusion
Using your air fryer to cook London broil is a smart, efficient technique that delivers impressive results. By selecting a good cut, preparing it properly, monitoring the temperature closely, and allowing it to rest, you can achieve a tender, flavorful steak with a beautiful crust.
This method proves that you do not need a grill or a broiler to make a great London broil. With a little practice, it will become a reliable go-to meal in your recipe rotation. The simplicity and speed are hard to beat, and the consistent results speak for themselves.