edited 7/3/2023


The flat iron steak is among the most traditionally overlooked cuts of steak, which is a shame because its absolutely delicious! This cut of beef is a true Mr. Steak favorite and in recent years has seen its popularity surge. Are you having a party or a summer cookout and you want to cook a unique steak that's less pricey? Choose the flat iron steak.

Mr. Steak is going to walk you through what is a flat iron steak and how to cook flat iron steaks. We'll discuss our favorite steak recipes, most notably our steak fajita recipe.


The flat iron steak is a thin, dense, and wonderfully flavorful cut. It's unlike the NY stripfilet mignon, or ribeye, which are more often eaten on their own alongside traditional side dishes. The flat iron is amazing inside tacos, fajitas, or sandwiches.

What makes the flat iron steak so special is its intense flavor profile, but like we always say, quality matters. The steak needs marbling, which Mr. Steak's wet-aged USDA PRIME provides. Eating prime steak makes a big difference in elevating your steak experience.

The flat iron steak comes from the chuck section of the cow. The chuck runs from the neck down to the fifth rib. This is where a chuck roast or chuck burger also comes from. Its prevalence on the cow makes it less expensive than other cuts, but no less delicious.


As with all high quality steaks, Mr. Steak recommends one of two options: pan searing or grilling. Both pan searing and grilling equally good methods. Each method calls on you to prepare your steak the same way. You may choose whichever option you personally prefer. 

Whether you are pan searing your flat iron steak or grilling your flat iron steak, the initial steps are the same. Transfer the steak from your freezer to your refrigerator one or two days before your meal, allowing the steaks to thaw.

A few hours before cooking, take the steaks out of the refrigerator and set them covered on the counter. Wait for them to come to room temperature. Season with a generous amount of your favorite steak seasoning. You can never go wrong with simple salt and pepper. 

Flat irons also do well in marinades, though if you're cooking a Mr. Steak wet-aged USDA PRIME steak, marinading is not necessary. While a marinade won't ruin the steak, it may mask its already potent flavor.  

Pan Searing Vs Grilling 

If you've chosen the pan seared flat iron method, we recommend using a cast iron griddle or cast iron pan. Cast iron griddles get very hot and because they have ridges they produce beautiful sear lines reminiscent of a grill. Cast iron pans will create a solid crust. You may simmer them in butter and herbs, which add distinct flavors. 

If you're grilling your steak, let the grill get as hot as possible before your steaks down on the grill grates. 

Because the flat iron is more thin and dense than other cuts, be careful not to overcook it. We recommend using a timer and a meat thermometer to gauge the steak's internal temperature. 

Mr. Steak loves his steak served rare, cooked only 2-3 minutes on each side. A rare steak has an internal temperature of 125°-130°. You may prefer a medium-rare steak, with an internal temperature of 130°-140°, or a medium steak at 140°-150°.

Once you remove your flat iron from the grill, do not cut into it right away. Allow the steak to rest for 5 minutes. The juices will migrate back into the meat's center.

Flat Iron Vs Flank Steak Vs Skirt Steak

Although a flank steak is leaner and somewhat less flavorful, you may still substitute it in the following recipe. A skirt steak has a bold flavor, but it can be sinewy and chewy. High quality flank steaks and skirt steaks can make wonderful meals, but we don't prefer them for our fajita recipe.


The flat iron steak is excellent as the main ingredient in tacos, fajitas, and sandwiches due to its rich flavor. Please watch our video above, in which Mr. Steak had a blast cooking his grilled flat iron fajita recipe. He used flour tortillas Check out the details below!


  • Mr. Steak’s Prime Flat Iron Steaks
  • Grilled Onions, coated in olive oil
  • Grilled bell pepper, coated in olive oil
  • Diced Tomatoes Shredded
  • Cheddar Cheese
  • Guacamole
  • Grilled warm tortillas
  • Salsa
  • Lime juice
  • Sour Cream


the recipe

  • Season Mr. Steak’s USDA Prime Flat Iron Steaks using his signature spices: Super Blend, Power Pepper, and Flavor Booster. You may use salt and black pepper or get more inventive with a blend of your favorite dried spices and herbs.
  • Grill Onions and Peppers on medium heat. Set aside. 
  • Grill your flat iron steaks on high heat. Let steaks rest 5-6 minutes before slicing into them.
  • Combine sliced steak, onions, peppers, tomatoes, salsas, guacamole, cheese, sour cream, and lime to a grilled warm tortilla.
  • Roll it up and dig in!


Are you ready to start? Check out Mr. Steak's USDA Prime Flat Iron Steaks!

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