Grilling Tips How to Grill a Flat Iron Steak

by Clint Cantwell


Intro to Grilling Flat Iron Steaks

In recent years, the Flat Iron steak has becoming increasingly popular on restaurant menus across the country, and for good reason. Taken from the upper portion of the top blade roast, this cut is named after its triangular shape (like an old clothes iron) and is perfect for grilling — given its uniform thickness, nice marbling and rich flavor.

So where has this steak been all of your life? Well, the top blade roast was actually ignored for years due to a tough connective tissue that runs through its center. Once the connective tissue was removed and the roast was separated in to two distinct pieces, however, the flat iron steak was born.

Now that you’ve been properly introduced, it’s time to fire up the grill. While Flat Iron steaks are certainly wonderful when given a quick soak in your favorite beef marinade prior to grilling, I find that its rich flavor is best left to shine alone.

Here’s how to grill a flat iron steak:


How to Grill a Flat Iron Steak

  1. Simply preheat your grill for medium-high heat cooking (approximately 400 degrees).
  2. Rub the steaks with a little olive oil, then season liberally with Kosher salt and ground black pepper.
  3. Grill the steaks over direct heat for 5-7 minutes per side until they reach an internal temperature of 130 degrees for medium rare.
  4. Allow the steak to rest for 10 minutes then slice it thin against the natural grain that runs through the steak to ensure maximum tenderness.

Now that your steak is sliced and ready to serve, I like to take it over the top with a flavor packed pesto butter — the recipe for which can be found below. Enjoy!

How to Grill a Flat Iron Steak

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Pesto Butter


  • 2 tbsp. pesto (ingredients & recipe follows)
  • 1 cup basil
  • ¼ cup extra virgin olive oil
  • 1 garlic clove
  • 2 tbsp. pine nuts
  • ¼ cup grated Parmesan cheese
  • ¼ tsp. Kosher salt
  • ¼ tsp. ground black pepper.
  • 6 tbsp. butter, softened



  1. Combine butter and pesto and refrigerate until ready to use.
  2. Combine the basil, garlic, pine nuts, Parmesan, salt and pepper in a food process or blender and pulse until finely chopped.
  3. Slowly add the olive oil and blend until fully incorporated.


For more Flat Iron steaks, check out a few recipes, here.

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About the Author

With a large online following and a passion for all things barbecue and grilling, Clint is the Editor of and pitmaster of Smoke in da Eye competition barbecue and grilling team. From his childhood in Texas to several years spent in Kansas City, Wisconsin, New Orleans and New York, Clint's passion for barbecue and grilling runs deep as he travels the country in search of the people, places and tastes that define our shared grilling culture. He currently resides just outside of Memphis, TN along with his wife, three children and Charcoal the dog, sharing his experiences, recipes, tips, techniques and more via the site, social media, traditional media, cooking demos and more.

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