How to Cook Flank Steak Perfectly on the Stovetop

Learning how to cook flank steak on the stovetop is a fantastic skill for any home cook. This lean, flavorful cut cooks quickly and is incredibly versatile, making it perfect for weeknight dinners or casual entertaining. The key to success lies in a hot sear, careful attention to doneness, and—most importantly—slicing it properly against the grain to ensure tenderness. This guide will walk you through the simple process of pan-searing flank steak to perfection.

Ingredients

• 1 ½ to 2 pounds flank steak
• 1 ½ tablespoons neutral oil with a high smoke point (such as canola, vegetable, or grapeseed)
• 1 ½ teaspoons kosher salt
• 1 teaspoon freshly ground black pepper
• Optional: 2 cloves garlic, smashed; a few sprigs of fresh thyme or rosemary; 2 tablespoons unsalted butter

Equipment

Having the right tools makes the process smoother and helps achieve the best results when you cook flank steak.

• Large Heavy-Bottomed Skillet: A cast iron or heavy stainless steel skillet is ideal for getting a strong, even sear.
• Instant-Read Thermometer: Essential for checking the steak’s internal temperature for accurate doneness.
• Tongs: For safely flipping the steak in the hot pan.
• Cutting Board: A stable board for seasoning and, later, slicing the steak.
• Sharp Chef’s Knife: A sharp knife is crucial for cleanly slicing the steak against the grain.

Instructions

1. Prepare the Steak: About 30 minutes before cooking, remove the flank steak from the refrigerator. Pat it completely dry on all sides with paper towels. This step is critical for achieving a good sear. Place it on a cutting board.
2. Season: Drizzle the steak with about half a tablespoon of oil and rub it over the entire surface. Season both sides generously and evenly with the salt and pepper, pressing the seasoning into the meat.
3. Heat the Pan: Place your heavy skillet on the stove over medium-high to high heat. Let it get very hot for 2-3 minutes. You should see a light wisp of smoke when you add the remaining oil.
4. Sear the First Side: Add the remaining tablespoon of oil to the hot pan and swirl to coat. Carefully lay the steak in the pan. It should sizzle loudly. Do not move it. Let it sear undisturbed for 3 to 5 minutes, until a deep brown crust has formed.
5. Flip and Sear the Second Side: Using tongs, flip the steak. If using aromatics like garlic and herbs, add them to the pan now. Sear the second side for another 3 to 5 minutes. For a medium-rare finish, you are aiming for an internal temperature of 130-135°F when checked with an instant-read thermometer inserted into the thickest part of the steak.
6. Optional Butter Baste: If desired, reduce the heat to medium, add the butter and optional aromatics to the pan. Tilt the pan slightly and, using a spoon, continuously pour the foaming butter over the steak for about 1 minute. This adds flavor and richness.
7. Rest the Steak: Transfer the cooked flank steak to a clean cutting board or plate. Tent it loosely with foil and let it rest for a full 10 minutes. This allows the juices to redistribute throughout the meat.
8. Slice Against the Grain: Look at the steak to identify the direction of the muscle fibers (the “grain”). Using your sharp knife, slice the steak thinly, at a slight angle, perpendicular to (against) those long fibers. This shortens the muscle fibers and makes each bite much more tender.

Food Safety and Storage

Store leftover cooked flank steak in an airtight container in the refrigerator for 3 to 4 days. Reheat slices gently in a skillet with a little broth or sauce to prevent drying out. Cooked flank steak can also be frozen for 2 to 3 months; thaw in the refrigerator before reheating. For more on safe food handling, see guidance from the USDA and FoodSafety.gov.

Variations

The basic stovetop method is just the beginning. Here are a few ways to vary your flank steak:

• Marinate: For deeper flavor and a slight tenderizing effect, marinate the steak for 2-12 hours before cooking. A simple marinade of olive oil, soy sauce, garlic, and a touch of acid like lime juice or vinegar works well. Check out our guide to simple marinades for inspiration that works with beef, too.
• Spice Rubs: Swap the salt and pepper for a homemade spice blend. A mix of chili powder, cumin, and smoked paprika creates a Tex-Mex style steak perfect for tacos.
• Make a Pan Sauce: After removing the steak, use the flavorful browned bits (fond) left in the pan. Add a splash of broth or wine, scrape up the bits, and simmer until slightly reduced. Finish by swirling in a pat of cold butter for a glossy, simple sauce to pour over the sliced steak. The technique is similar to finishing a pan-seared salmon.
• Asian-Inspired: Slice the cooked steak and toss it in a quick stir-fry sauce with vegetables. Our guide on how to make a simple vegetable stir-fry sauce offers great starting points.

FAQ

Why is it so important to slice flank steak against the grain?

Flank steak is a cut with very long, noticeable muscle fibers. Slicing with the grain leaves those long fibers intact, resulting in a chewy, tough piece of meat. Slicing against (perpendicular to) the grain shortens these fibers dramatically, making each slice tender and easy to eat. It’s the single most important step for enjoying this cut.

Can I cook flank steak to well-done?

While you can cook any steak to your preferred doneness, flank steak is very lean. Cooking it past medium (to about 150-155°F) will likely result in a dry and tough texture. For the best eating experience, we recommend not cooking it beyond medium doneness. If you prefer well-done beef, a different cut with more marbling may be a better choice.

What’s the best way to reheat leftover flank steak?

To prevent the lean meat from drying out, avoid the microwave. The best method is to reheat slices gently in a skillet over medium-low heat with a small amount of liquid—like beef broth, a pan sauce, or even a little water. Cover the pan briefly to steam-heat the meat until just warmed through. You can also add cold slices to salads or grain bowls.

What should I serve with pan-seared flank steak?

Flank steak pairs wonderfully with a wide variety of sides. For a classic meal, serve it with mashed potatoes and a green vegetable like roasted asparagus or a simple salad. For a lighter option, pair it with a quinoa or rice pilaf and a bright, fresh salsa. It also works beautifully in tacos, on top of salads, or in sandwiches. Explore our collection of main dish recipes for more complete meal ideas.

How does cooking flank steak compare to other quick-cooking meats?

The high-heat stovetop method for flank steak is similar to techniques used for other proteins that benefit from a fast sear, like salmon fillets or chicken cutlets. The core principles are the same: ensure the protein is dry, the pan is very hot, and you avoid overcrowding to achieve a good crust. The major difference with flank steak is the essential post-cook rest and the critical slicing direction.