How to cook flat iron steak in the oven

Flat iron steak cooked in the oven
Flat iron steak cooked in the oven

Flat iron steak is excellent for cooking in the oven. It has a good amount of marbling and a fantastic beefy flavor. The cooking process takes 5-12 minutes and does not require much preparation.

Flat iron steak is taken from the chuck area of the cow. Cows shoulder is a well-exercised muscle; therefore, steak cuts from the chuck primal have a bold flavor profile. It’s also the second most tender cut after filet mignon.

Unfortunately, flat iron steak is not available at most supermarkets. Try to look for it at your local butcher shop. Depending on your location, flat iron steak is known as blade steak, butler’s steak, shoulder top blade steak, top blade steak, or top blade filet. It’s easier to find flat iron steak at an online shop. Snake river farms have excellent quality flat iron steaks on offer. However, if you have difficulty finding flat iron steak go for flank steak or skirt steak instead.

How to cook flat iron steak in the oven?

Cooking flat iron steak in the oven
Cooking flat iron steak in the oven

There are plenty of ways to cook flat iron steak. Below you’ll find a step-by-step guide on how to broil it in the oven. This flat iron steak recipe will need only a few ingredients and a heavy pan. A cast iron skillet or heavy stainless steel pan is best since it can withstand the high heat required for searing.

If you want to make steak tender or add additional flavors to the meat, you’ll need to prepare steak in advance.

Flat steaks are excellent for marinating. Use your favorite steak marinade to add additional flavors to the meat. Flat iron steak is perfect for steak fajitas, tacos, salads, or your favorite side dishes.


  • Flat iron steak.
  • Kosher salt.
  • Freshly ground black pepper.
  • Fresh rosemary and thyme.
  • Light olive oil.
  • Knob of butter.


  1. Season flat iron steak with kosher salt and leave it in a fridge. Salt will draw the moisture out of the steak and form a brine. The same brine will soak back into the steak and break down lean muscle proteins. It’ll make flat iron steak even more tender and juicy. Alternatively, you can use your favorite steak marinade.
  2. Bring flat iron steak to room temperature 30 minutes before broiling. It’ll allow steak to cook much faster and evenly throughout.
  3. Pat the steak dry with paper towels to remove excess moisture on the steak’s exterior. It’ll allow steak to sear much better on the outside.
  4. Move the top rack of the oven 5 inches away from the broiler. Cooking flat iron steak near the heat source is essential to achieve a crispy crust. It’s hard to achieve steak’s surface texture of a grilled flat iron steak if there’s not enough heat radiating from the above.
  5. Turn on the broiler for 15-20 minutes before cooking the steak. Ensure it’s screaming hot.
  6. Line the rimmed baking sheet with parchment paper. It’ll collect fat dripping from the steak and make cleaning much easier.
  7. Rub flat iron steak with light olive oil and place it on a baking sheet. Transfer the baking sheet to the oven. Broil steak for 3-4 minutes. Take it out of the oven and check the steak’s internal temperature. Stick the meat thermometer into the thickest part of the meat. Wait until the temperature stabilizes. Flat iron steak is the most tender and juicy when cooked to medium rare (135° Fahrenheit/57°C). Transfer the steak back to the oven and continue cooking to the desired doneness. Remove the steak from the oven when the internal temperature is 5° Fahrenheit below the desired doneness. The steak continues to cook when off the heat source.
  8. Rest the flat iron steak for 5-10 minutes before serving. During the cooking process, steak juice is pushed toward the center of the meat. If you were to slice into the steak after it’s cooked, the juices would run out of the steak onto your plate. Resting allows steak juice to redistribute throughout the steak’s interior, making it tender and juicy.
  9. When serving flat iron steak, slice it against the grain. It’ll reduce the length of the muscle fibers, making it easier to chew.

How to measure a flat iron steak’s internal temperature?

Flat iron steak internal temperature
Flat iron steak internal temperature

To measure a flat iron steak’s internal temperature, you must insert a meat thermometer into the thickest part of the steak. Wait 15-20 seconds until the temperature stabilizes. Use a finger test method if you do not have a meat thermometer. Press your index finger onto the thick part of the flat iron steak. Rare should feel soft without any give. Medium rare has some give. Medium steak has quite a lot of give. Medium feels hard. Well done is extremely hard with no give. Here’s flat iron steak’s internal temperature chart:

  • Rare steak: 125° Fahrenheit/52°C.
  • Medium rare steak: 135° Fahrenheit/57°C.
  • Medium steak: 145° Fahrenheit/62°C.
  • Medium-well steak: 150° Fahrenheit/65°C.
  • Well done, steak: 160° Fahrenheit/71°C.

Broil flat iron steak until the steak’s internal temperature is medium-rare (135° Fahrenheit/57°C). At this temperature, steak is tender and juicy.

How long does it take to cook flat iron steak in the oven?

Here’s how long it takes to broil flat iron steak in the oven at maximum temperature:

  • Rare steak: 4-6 minutes
  • Medium-rare steak: 6-8 minutes;
  • Medium steak: 8-10 minutes;
  • Medium-well steak: 10-12 minutes;
  • Well done, steak: 12+ minutes.

Storing and reheating leftover flat iron steak

Store leftover flat iron steak in an air-tight container. You can also use a ziplock back. Remove as much air as possible. Aluminum foil and plastic wrap are excellent for storing leftover meat. Make sure to wrap it tightly to prevent air from spoiling leftover steak. Steak can last in a fridge for 3-4 days.

Reheat leftover flat iron steak in the oven. Preheat oven to 275° Fahrenheit. Place the steak on a wire rack on a baking sheet and slide it into the oven on a middle shelf. Reheat leftover steak for 15-25 minutes, depending on the steak’s size. If you’re unsure how to reheat steak step-by-step, click the link to learn more.


What is the best way to cook a flat iron steak?

The best way to cook a flat iron steak is on a grill or a hot skillet and to finish cooking steak on medium heat. Flat iron steak benefits from cooking fast and using a cooking method that requires high heat.

What temperature should you cook flat iron steak in the oven?

Suppose reverse searing flat iron steak set oven temperature to 275° Fahrenheit. However, if broiling steak, set the oven to maximum temperature.

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