Grilling a London Broil on your gas grill can be a game-changer for your next meal. But how long should you grill it to get that perfect balance of juicy inside and a flavorful crust?
If you’ve ever wondered about the ideal grilling time or how to avoid overcooking, you’re in the right place. This guide will give you clear, easy steps to master your London Broil every time. Keep reading, and you’ll turn your gas grill into the secret weapon for mouthwatering steaks.
Choosing The Right London Broil
Choosing the right London broil sets the stage for a delicious grilling experience. The cut quality and how you prepare it affect the final taste and tenderness. Selecting the perfect piece and marinating it well will make your gas grill cooking easier and more rewarding.
Selecting Quality Cuts
Look for London broil cuts with a deep red color. Avoid meat with brown or gray spots. Choose cuts that have some marbling. Fat adds flavor and keeps the meat juicy. Pick pieces that are about 1 to 1.5 inches thick. Thicker cuts grill better and stay tender. Freshness matters; buy from a trusted butcher or store.
Preparation And Marinating Tips
Trim excess fat before marinating. This prevents flare-ups on the grill. Use a marinade with acid like vinegar or lemon juice. Acid breaks down tough fibers and tenderizes the meat. Include oil and seasonings for better flavor. Marinate for at least 4 hours, up to overnight. Always marinate in the fridge to keep the meat safe. Pat dry before grilling to get a nice sear.

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Preparing The Gas Grill
Preparing your gas grill properly sets the stage for a perfectly cooked London Broil. It’s not just about turning on the flames; it’s about controlling heat and ensuring even cooking. Taking a few extra minutes at the start can make a big difference in flavor and texture.
Setting The Temperature
Your gas grill needs to reach the right temperature before you place the London Broil on it. Aim for a medium-high heat, which is typically around 400°F to 450°F. This temperature range allows the steak to sear nicely on the outside while cooking evenly inside.
Most gas grills have knobs labeled with numbers or heat levels. If yours uses numbers, set the burners to about 4 or 5 out of 6. If it uses low, medium, and high settings, choose medium-high to get that perfect sear.
Preheating Guidelines
Preheating your grill is crucial. Close the lid and let the grill heat up for 10 to 15 minutes. This helps the grates get hot enough to create those desirable grill marks on your London Broil.
Skipping this step can cause sticking and uneven cooking. You’ll know the grill is ready when you can hold your hand about 5 inches above the grate for only 2 to 3 seconds before it feels too hot.
Have you ever noticed how a well-preheated grill makes flipping the meat easier and results in a juicier steak? That’s why taking the time to prepare your grill properly pays off.
Grilling Time For Different Thicknesses
Grilling a London Broil perfectly depends largely on the thickness of your cut. Thinner cuts cook faster and require more attention to avoid overcooking. Thicker cuts, on the other hand, need more time but can develop a juicier interior if grilled right.
Thin Cuts Timing
Thin cuts, usually around 1/2 inch thick, take about 4 to 6 minutes per side on a gas grill set to medium-high heat. You’ll want to watch closely and flip once to keep the meat tender and avoid drying it out.
Try grilling thin cuts quickly to achieve a nice sear while keeping the inside juicy. Have you noticed how fast thin steaks can go from perfect to tough? That’s why timing is critical here.
Thick Cuts Timing
For thick cuts, about 1.5 to 2 inches thick, grill them for 6 to 8 minutes per side over medium heat. After searing both sides, you might want to lower the heat and cook a bit longer to reach your desired doneness without burning the outside.
Using a meat thermometer can be a game-changer for thick cuts. Aim for 130°F for medium-rare and 140°F for medium. Don’t you think that a little extra patience pays off with a perfectly cooked London Broil?
Achieving Desired Doneness
Grilling London Broil requires attention to time for perfect doneness. Cooking 4 to 6 minutes per side usually achieves medium-rare. Use a meat thermometer to check internal temperature for best results.
Achieving the perfect doneness for a London Broil can transform a simple grilling session into a culinary success. Whether you prefer a juicy, rare slice or a thoroughly cooked piece, understanding how to achieve the right doneness is key. Your confidence will grow as you learn the nuances of grilling, allowing you to cater to everyone's taste preferences with precision.
Rare To Medium-rare
Grilling a London Broil to rare or medium-rare retains its juiciness and rich flavor. Aim for an internal temperature of 125°F for rare and 135°F for medium-rare. Use a meat thermometer to check the temperature accurately. Grill each side for approximately 4-5 minutes on high heat. This quick searing locks in the juices and enhances the natural flavors. Remember to let the meat rest for a few minutes before slicing. This step ensures the juices redistribute evenly, delivering a tender bite every time.
Medium To Well-done
For those who enjoy their meat more cooked, achieving a medium to well-done London Broil requires a bit more time on the grill. A medium doneness is reached at around 145°F, while well-done hits 160°F. Lower the heat slightly to prevent the exterior from burning before the interior is cooked. Grill each side for about 6-7 minutes, adjusting based on the thickness of the meat. Patience is crucial here. Avoid cutting into the meat immediately after grilling, as this can cause it to dry out. Instead, let it rest, allowing you to enjoy a flavorful and satisfying meal. Doesn't it feel rewarding to serve a dish that meets everyone's expectations?
Flipping And Resting Tips
Flipping and resting are key steps to grilling a perfect London Broil. These actions affect the meat’s texture and flavor. Proper timing ensures even cooking and juicy results. Skipping these steps can make the steak tough or dry.
When To Flip
Flip the London Broil once during grilling. Look for clear grill marks and a brown crust on the first side. The edges will start to firm up but stay soft inside. Avoid flipping too soon to prevent breaking the crust.
Use tongs or a spatula for flipping. Avoid pressing the meat to keep juices inside. Flipping only once helps cook the steak evenly and retains moisture.
Resting For Juiciness
Rest the meat after grilling for about 5 to 10 minutes. This lets the juices spread inside the steak. Cutting too soon causes the juices to escape, making the meat dry.
Cover the London Broil loosely with foil during resting. This keeps the heat in without steaming the meat. Resting improves tenderness and flavor for a better eating experience.
Common Grilling Mistakes To Avoid
Grilling a London Broil perfectly takes more than just setting the right temperature and time. Avoiding common mistakes can make the difference between a juicy, flavorful steak and a tough, disappointing one. Understanding these pitfalls helps you get the most out of your gas grill and your meat.
Overcooking Risks
One of the biggest mistakes is overcooking your London Broil. This cut is lean and can become tough and dry if left on the grill too long. Keep a close eye on the internal temperature and aim for medium-rare to medium, around 130-140°F (54-60°C).
Using a meat thermometer is a game-changer. Don’t rely on guesswork or just the clock. Have you noticed how quickly the steak can go from perfect to too done? That’s why timing and temperature control matter.
Underseasoning Issues
Underseasoning is another common error that can ruin your grilling experience. London Broil benefits from a bold seasoning or marinade to enhance its natural flavor. Simple salt and pepper go a long way, but don’t be afraid to add garlic, herbs, or a splash of soy sauce.
Marinate for at least a few hours or overnight if possible. This not only seasons the meat but also helps tenderize it. Have you ever bitten into a bland steak and wished you had added more flavor? Don’t let that happen with your next grill session.
Serving Suggestions
Serving a perfectly grilled London Broil is only part of the experience. What you pair it with can elevate your meal and turn a simple dinner into something memorable. Think about how the flavors and textures on your plate work together to enhance the taste of the meat.
Side Dishes That Complement
Choosing the right side dishes can bring out the best in your London Broil. Roasted vegetables like asparagus or Brussels sprouts add a nice crunch and slight bitterness that balances the rich, smoky flavor of the steak.
Consider creamy mashed potatoes or a light, herby couscous salad to add softness and freshness. A crisp green salad with a tangy vinaigrette can also refresh your palate between bites.
Have you tried grilled corn on the cob with a sprinkle of chili powder and lime? It’s a personal favorite that adds a sweet and spicy kick to the meal.
Sauces And Marinades
A good sauce or marinade doesn’t just add flavor; it can highlight the natural juiciness of your London Broil. Classic options like chimichurri bring a vibrant, herbaceous note that cuts through the meat’s richness.
Think about a balsamic glaze or a horseradish cream sauce for a tangy, sharp contrast. If you prefer something smoky, a barbecue sauce with a hint of sweetness can complement the char from the grill perfectly.
Why not try marinating your steak beforehand in a mixture of soy sauce, garlic, and a touch of honey? It infuses the meat with deep, savory flavors that stay juicy after grilling.

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Frequently Asked Questions
How Long Should I Grill London Broil On A Gas Grill?
Grill London Broil for 4-6 minutes per side over high heat. Aim for medium-rare at 130°F internal temperature. Adjust time for thickness and doneness preference. Rest meat 5-10 minutes before slicing.
What Is The Ideal Internal Temperature For London Broil?
Cook London Broil to 130°F for medium-rare doneness. Use a meat thermometer for accuracy. Higher temperatures yield medium (140°F) or well-done (160°F). Rest after grilling to allow juices to redistribute.
Should I Marinate London Broil Before Grilling?
Yes, marinating tenderizes the meat and enhances flavor. Use acidic ingredients like vinegar or citrus for 4-24 hours. This helps break down tough fibers. Pat dry before grilling for better sear and grill marks.
How Do I Prevent London Broil From Drying Out?
Avoid overcooking by monitoring internal temperature closely. Use a marinade or oil to retain moisture. Grill over high heat briefly for a good sear. Always let the meat rest before slicing to keep juices inside.
Conclusion
Grilling London Broil on a gas grill takes careful timing. Aim for about 4-6 minutes per side for medium rare. Let the meat rest a few minutes after grilling. This helps juices spread inside. Use a meat thermometer for best results.
Remember, thicker cuts need more time. Keep the grill hot and watch closely. Enjoy your tender, flavorful London Broil fresh off the grill. Simple steps lead to tasty meals every time. Try it soon and taste the difference.


