How To Cook Flank Steak In The Oven

ByLily

Oven-cooked flank steak suits anyone who wants consistent results without standing over a hot stove the entire time. If you want to know how to cook flank steak in the oven, the process is simpler than most people think. You need a hot oven, a good seasoning rub, and a meat thermometer.

Flank steak is a lean, flavorful cut from the abdominal muscles of the cow. It has long, visible grain and very little fat. That means it can turn tough fast if you overcook it. The oven gives you steady, even heat, which helps you control doneness better than a screaming hot pan alone.

This guide walks you through prep, cooking times, resting, and slicing. Follow the steps and you will get tender, juicy results every time.

Why The Oven Works Well For Flank Steak

A flank steak is thin and wide, so it cooks quickly. The oven surrounds it with consistent heat on all sides. You do not have to flip it constantly or babysit a skillet.

High heat in the oven creates a nice browned crust on the outside while keeping the inside pink and tender. It is also hands-off. You can prep sides while the steak roasts.

The key is to use a hot oven, usually between 400°F and 450°F, and to pull the steak before it overcooks. Carryover cooking will finish the job while it rests.

How To Cook Flank Steak In The Oven

Here is the full method, from start to finish. Plan for about 30 to 40 minutes total, including prep and resting.

What You Will Need

  • 1 flank steak, about 1.5 to 2 pounds
  • 1 to 2 tablespoons olive oil or another high-heat oil
  • 1 teaspoon kosher salt
  • 1/2 teaspoon black pepper
  • 1 teaspoon garlic powder
  • 1 teaspoon onion powder
  • 1/2 teaspoon smoked paprika (optional)
  • Sheet pan or oven-safe skillet
  • Aluminum foil
  • Instant-read meat thermometer
  • Sharp knife for slicing

Step 1: Preheat The Oven And Prep The Pan

Set your oven to 425°F. Let it preheat fully. This takes at least 15 minutes in most ovens.

Line a sheet pan with foil for easy cleanup. If you have a cast iron skillet, you can use that instead. A hot skillet gives a better sear on the bottom of the steak.

Step 2: Season The Steak

Pat the flank steak dry with paper towels. Dry meat browns better than wet meat.

Rub the steak with oil on both sides. Mix the salt, pepper, garlic powder, onion powder, and paprika in a small bowl. Sprinkle the rub evenly over the entire surface.

Let the seasoned steak sit at room temperature for 15 to 20 minutes while the oven heats. This helps it cook more evenly.

Step 3: Sear It If You Want A Crust

This step is optional but recommended. Heat a cast iron skillet or heavy oven-safe pan over high heat on the stove. Add a small amount of oil.

Place the steak in the pan and sear for 1 to 2 minutes per side. You want a brown crust, not a fully cooked steak. Then move the pan to the oven.

If you skip the sear, just place the steak on the foil-lined sheet pan and put it in the oven. It will still taste good, just with less crust.

Step 4: Roast To Your Target Temperature

Put the pan on the middle rack of the oven. Roast until the internal temperature reaches your target. Check with a thermometer starting around the 8-minute mark.

  • Rare: 120°F to 125°F
  • Medium rare: 130°F to 135°F
  • Medium: 140°F to 145°F
  • Medium well: 150°F to 155°F

Most flank steaks that are 1 inch thick take 10 to 15 minutes at 425°F. Thinner steaks cook faster. Thicker ones take a few minutes longer.

Do not rely on time alone. Use the thermometer. This is the single most important tool for tender flank steak.

Step 5: Rest The Steak

Take the steak out of the oven and place it on a cutting board. Tent it loosely with foil. Let it rest for 5 to 10 minutes.

Resting lets the juices redistribute. If you cut too early, the juice runs out and the meat tastes dry. This step is not optional if you want good results.

Step 6: Slice Against The Grain

Look at the surface of the steak. You will see lines running in one direction. Those are the muscle fibers, or the grain.

Cut across those lines, not along them. Hold your knife at a slight angle and slice thin pieces, about 1/4 inch thick. Slicing against the grain shortens the tough fibers and makes every bite tender.

This one step can make the difference between chewy and tender flank steak. Do not skip it.

Tips For Better Oven Flank Steak

  • Do not overcook it. Flank steak has little fat, so it dries out fast past medium.
  • Use a thermometer. Guessing leads to tough meat.
  • Let the steak come to room temperature before cooking for even doneness.
  • Slice thin. Thick slices are harder to chew.
  • Marinate if you have time. A simple mix of soy sauce, oil, garlic, and acid like lime juice adds flavor and helps tenderness. Even 30 minutes helps.
  • Broil for the last 1 to 2 minutes if you want more color on top. Watch it closely so it does not burn.

Common Mistakes To Avoid

Many people cook flank steak like a ribeye. That is a mistake. Flank steak needs less time and more attention to slicing.

Another common error is cutting with the grain. It makes even perfectly cooked steak feel tough. Always check the direction of the fibers before you slice.

Skipping the rest is also a problem. The steak keeps cooking after it leaves the oven, so pull it a few degrees early and let it sit.

Serving Ideas

Sliced flank steak works with many sides. Try it over rice, in tacos, on a salad, or next to roasted potatoes and grilled vegetables.

Leftovers keep in the fridge for 3 to 4 days. Slice them cold and add to sandwiches or grain bowls. Reheat gently so they do not dry out.

With a hot oven, a simple rub, and a sharp knife, you can make flank steak that is tender and full of flavor. The method is easy once you know the temperatures and the slicing direction. Give it a try on your next weeknight dinner.

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