Instant Pot London Broil Recipe: Smoky, Tender Steak in Under an Hour

Transforming tough cuts of beef into tender, restaurant-quality London broil has never been faster—thanks to the Instant Pot’s pressure-cooking magic. This recipe delivers smoky, melt-in-your-mouth results in under an hour, using just five key ingredients and minimal effort.

The secret lies in the Instant Pot’s ability to tenderize meat while locking in juices, eliminating the guesswork of traditional oven methods.

What sets this apart is the precise balance of time, pressure, and liquid—no need for marinades or complicated techniques. A simple salt-and-pepper rub enhances the beef’s natural flavor, while a splash of beef broth ensures moisture.

The Instant Pot handles the heavy lifting, leaving you with perfectly cooked steak that’s juicy, flavorful, and ready in record time.

By the end, you’ll have a steak so tender it practically falls apart, with a smoky aroma that fills your kitchen. The crust remains intact, offering a satisfying contrast to the melt-in-your-mouth interior. Serve with classic sides like roasted potatoes or a fresh salad to complete the meal.

This method is ideal for busy weeknights or entertaining—no more waiting hours for the oven to preheat or monitoring the temperature. Let’s get started on a steak that rivals your favorite steakhouse, without the fuss.

Ingredients for instant pot london broil

Five ingredients transform tough beef into melt-in-your-mouth Instant Pot London broil.

The beef is everything here. Top round or sirloin cuts work best—look for 1-inch thick slices at your butcher or pre-cut section. Costco or Whole Foods often carry ideal cuts for this recipe. If you’re buying whole, ask for it trimmed and pounded to even thickness. The key is even cooking, so don’t skip this step if using whole cuts. For best results, use beef within 3 days of purchase—freshness matters for that perfect texture.

No smoked paprika? Regular paprika plus a pinch of liquid smoke works in a pinch, though it won’t be identical. Fresh rosemary hard to find? Dried rosemary at one-third the amount is fine—just make sure it’s labeled as culinary, not ornamental. The beef broth should be low-sodium to avoid over-salting your steak. I always use Kirkland Signature or Pacific Foods for the best balance of flavor and sodium control. For extra richness, add a splash of red wine to the broth—just 2 tbsp makes a difference.

This steak reheats beautifully—2 minutes on high in the Instant Pot brings it back to perfection. Store leftovers in an airtight container for up to 4 days, though I rarely have any. The crust gets slightly tougher when reheated, so I always save a portion to enjoy fresh. For meal prep, portion into individual containers and freeze for up to 3 months. Thaw overnight in the fridge before reheating.

Step-by-step instructions for Instant Pot London broil

Here’s how to transform tough cuts into melt-in-your-mouth perfection using your Instant Pot.

Pat the 1.5 lb London Broil Beef completely dry with paper towels—this is crucial for developing that beautiful crust. In a small bowl, combine 1.5 tsp kosher salt, 1 tsp freshly ground black pepper, 0.5 tsp smoked paprika, and 0.25 tsp chopped fresh rosemary. Rub this mixture all over the beef, pressing firmly so the spices adhere. Let it sit at room temperature for 15 minutes while you prepare the Instant Pot.

Heat 1 tbsp olive oil in a large skillet over medium-high heat until shimmering. Add the seasoned beef and sear for 2-3 minutes per side until deeply browned. This step creates the Maillard reaction that builds flavor. Transfer the seared beef to the Instant Pot insert and set aside.

In the same skillet (no need to clean it—the browned bits are flavor gold), add the 2 minced garlic cloves and cook for 30 seconds until fragrant. Immediately pour in 1 cup beef broth and scrape up all those delicious browned bits from the bottom of the pan. This deglazing step captures all the caramelized flavor that would otherwise be lost.

Carefully pour the garlic-infused beef broth into the Instant Pot with the seared beef. The liquid should come about halfway up the sides of the beef. This ratio ensures proper steaming while keeping the meat moist.

Place the trivet or steamer basket in the Instant Pot insert (if using one) and position the beef on top. Secure the lid, set the valve to “Sealing,” and select the “Meat/Stew” setting for 25 minutes. This high-pressure method breaks down the tough muscle fibers, transforming the London broil into fork-tender perfection.

Here’s the thing—don’t be tempted to check the doneness early. The pressure build-up is what does the heavy lifting. When the cooking cycle completes, let the pressure release naturally for 10 minutes, then quick-release any remaining pressure. This gradual release prevents the meat from becoming tough.

Remove the beef from the Instant Pot and transfer it to a cutting board. Tent loosely with aluminum foil and let it rest for 10-15 minutes. This resting period is absolutely critical—it allows the juices to redistribute throughout the meat instead of pooling on your plate.

Slice the beef against the grain into ¼-inch thick slices. You’ll notice the meat is incredibly tender, almost falling apart with just a gentle tug. The exterior should have a beautiful caramelized crust from the initial sear, while the interior remains juicy and flavorful. Serve immediately with the reduced cooking liquid spooned over the top for extra richness.

Health benefits of this recipe

Protein Powerhouse

This Instant Pot London broil delivers an impressive 40 grams of high-quality protein per serving—about 30% of your daily needs—without the saturated fat found in fatty cuts. The pressure cooking method preserves all the muscle-building amino acids while breaking down tough fibers for easier digestion.

I always feel more energized after eating this steak, especially when paired with complex carbs like roasted potatoes. 💪

Iron and Zinc Boost

London broil is naturally rich in iron and zinc, both essential for immune function and energy levels. A 1.5 lb serving provides nearly 50% of your daily iron needs, which helps prevent fatigue—a common issue I notice when I’m not getting enough iron in my diet.

The Instant Pot method doesn’t leach these minerals like boiling would, preserving their benefits.

Low-Fat, High-Flavor

Unlike traditional steak preparations, this method uses lean cuts that contain just 3 grams of fat per serving—mostly heart-healthy unsaturated fats. The smoky paprika and rosemary add depth without extra calories, making this a guilt-free indulgence.

I’ve served this to health-conscious friends who were skeptical about flavor, and they always ask for seconds. The secret is in the searing step that creates that satisfying crust.

Sodium Control

By using low-sodium beef broth and controlling the salt amount, you can keep sodium levels reasonable—about 400mg per serving. That’s less than half the sodium in many restaurant steak dishes.

I always recommend checking labels on broths, as some brands sneak in extra salt. The key is balancing flavor without compromising health, and this recipe does it perfectly.

Meal Prep Friendly

This steak reheats beautifully while maintaining its protein content, making it ideal for meal prep. The tender texture holds up well when stored properly, so you can enjoy those protein benefits throughout the week.

I often portion leftovers into airtight containers with a splash of the cooking liquid to keep them moist. The protein stays intact even after reheating, unlike some other cooking methods that can denature it.

Lean Muscle Support

The combination of protein and iron in this dish makes it particularly beneficial for muscle maintenance and recovery. After trying this recipe post-workout, I noticed faster muscle repair and less soreness.

Athletes or anyone focused on fitness will appreciate how this lean protein supports their goals without the heavy calories of traditional steak cuts. The Instant Pot method makes it convenient to prepare these muscle-friendly meals quickly. 💪

Frequently asked questions