Flat Iron Steak Recipe {Tender & Juicy}

When I tried this Flat Iron Steak Recipe, I couldn't believe how such an affordable cut could rival expensive steakhouse favorites. The secret lies in a simple marinade and knowing exactly when to pull it from the heat!

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Quick Recipe Overview

WHAT: Pan-seared flat iron steak with a tangy soy-lemon marinade, cooked to medium-rare perfection.

WHY: Tender, flavorful results using an affordable cut that rivals pricier steaks.

HOW: Marinate the steak, season, sear in a hot pan until internal temperature reaches 135°F, rest, and slice.

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What is Flat Iron Steak?

Flat iron steak is cut from the chuck shoulder blade area of the steer, and it gets its name from the shape of the steak - which resembles an old-fashioned flat iron. 

While this area of the steer is known for being tough and chewy, flat iron is actually a very tender steak. The steak is sliced in a certain way to cut through the tough connective tissue and is said to be the second most tender cut.

Essentially, flat iron steak is a great value cut that delivers flavor at an affordable price!

Flat iron steak is also a lean meat cut but often has nice marbling and fat throughout. This fat melts during cooking and helps make a tender and juicy steak. Also known as top blade steak, butler steak, or oyster blade steak - learning how to cook flat iron steak can open up a world of tasty possibilities!

Why You'll Love This Flat Iron Steak Recipe

• Flavorful steak: Once you try this flat iron steak, you won't want to go back to regular steak recipes! The marinade adds a yummy flavor and helps bring out the best of the steak.
• Super simple: All you need to do is mix up the delicious marinade ingredients in a small bowl, pour it over the steak, then let it sit for at least an hour. Cooking it is just as easy - this flat iron steak recipe is truly a no-fuss way to enjoy steak at home!
• Great budget option: It's no secret steak can get expensive. There are so many different cuts to choose from, but what's great about flat iron steak is that you get all the incredible flavor without breaking the bank - all while delivering a restaurant-worthy steak that home cooks can master.

Ingredient Notes

Flat Iron Steak: Look for a 1–2 pound flat iron (also sold as blade steak) with good marbling. The marbling ensures flavor and tenderness throughout the cook. Most well-stocked grocery stores and butcher shops carry it.

Soy Sauce: Regular soy sauce works perfectly here. If you're cooking for someone who is gluten-free, tamari is a seamless swap with no difference in flavor.

Scallions: Chopped scallions add a mild, fresh onion flavor to the marinade. You can use the white and green parts — both work great.

Brown sugar: Adds subtle sweetness and helps with caramelization. Don't skip it - the balance of sweet, salty, and acidic is what makes this marinade work.

For the exact amounts needed, please see the recipe card below.

How to Cook Flat Iron Steak

Step 1: Combine the marinade ingredients in a large resealable bag or shallow dish and add the flat iron steak.

Step 2: Let sit for 1 hour, up to overnight in the fridge.

Step 3: Remove the marinated steak from the marinade.

Step 4: Season with salt, pepper, and paprika on each side of the steak.

Step 5: Add 2 tablespoons of olive oil to a medium pan over medium heat on the stove.

Step 6: Place steak in the hot skillet and cook for 5-6 minutes per side. The steak cooks until the internal temperature reaches 135°F (135 degrees F), or your desired perfect doneness.

Step 7: Let rest for 10 minutes on a wooden cutting board. Slice against the grain and serve.

How to Slice Flat Iron Steak

Believe it or not, there is a "right" way to slice flat iron steak. You'll want to cut your steak against the grain for the best results. The grain of flat iron steak runs lengthwise across the steak, so slicing against it helps break down those tough muscle fibers and make it even more tender.

A good quality set of steak knives can help you get the job done properly. If you don't have one, I highly recommend investing in a good set - it makes all the difference!

Flat Iron Steak Recipe Variations

This is a great recipe as it is, but if you're feeling adventurous, there are plenty of ways to mix things up. Here are a few ideas:

• Alternative steak: While this recipe teaches you how to cook flat iron steak, you can also use your favorite cuts of beef! New York strip, skirt steak, and flank steak are all great options. Just be sure to alter the cooking times according to the thickness of the steak.
• Marinade: Switch it up by adding different flavors to the marinade to suit your tastes. Balsamic vinegar and Worcestershire sauce, as I used in my Tri Trip recipe, would work great! Ingredients like chili powder would add a nice spicy flavor, too.
• Olive oil: Any flavorless oil will work in this recipe, but I do like using good-quality olive oil. Butter will be a good alternative if you don't have any oil in your pantry.

How to Serve Flat Iron Steak

• The flat iron steak is a thin cut of steak, making it the perfect addition for salads, sandwiches, and tacos.
• My chopped steak salad or leftover steak tacos are ideal for busy weeknights. Or, for something more substantial, you can serve your flat iron steak with roasted vegetables, such as brown sugar carrots or Brussels sprouts, and steakhouse mashed potatoes.
• Sliced flat iron steak would also make a brilliant game night meal! Serve with fresh pretzel bites, beer cheese sauce, and french fries for the ultimate game night feast.

Storage & Reheating Tips

Room temperature

Don't leave cooked steak out for more than 2 hours. Slice and serve immediately for best results.

Refrigerator Storage

Store leftover cooked steak in an airtight container for up to 3-4 days. Slice before storing to make reheating easier and ensure it fits in containers properly.

Freezer Storage

Wrap tightly in plastic wrap, then aluminum foil, and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.

Reheating

For best results, bring refrigerated steak to room temperature for 20 minutes. Heat a skillet over medium-low with a bit of butter or olive oil and warm slices for 1-2 minutes per side. Avoid microwaving if possible - it tends to make steak tough and rubbery.

Make Ahead

Marinate the steak up to 24 hours in advance. You can also season it ahead and keep refrigerated for a few hours before cooking, but bring to room temperature before hitting the pan.