Tremendous Flat Iron Steak

Prep
10m
Cook
8m
Total
18m
Bigly says
Here's what nobody tells you about flat iron steak. It didn't exist. I'm being serious. Until about twenty years ago this cut wasn't even on the market — it was buried inside the shoulder, the chuck, the part of the cow nobody respected, and butchers would either grind it up for hamburger or stew it into oblivion. Then two meat scientists at the University of Nebraska — meat SCIENTISTS, folks, smart people, the smartest, they have lab coats and everything — they sat down with a chuck shoulder and a knife and started looking for hidden gems, and they FOUND ONE. They found the infraspinatus. Tucked under the shoulder blade. Beautifully tender. Beefy as anything. They named it the flat iron because when you trim it out and lay it flat it looks like the bottom of an old clothes iron. Phenomenal story. Nobody disputes this. Look it up.
Now what makes flat iron tremendous — and it IS tremendous, that's not me being generous, that's me being ACCURATE — is the price-to-quality ratio. Pound for pound it has more marbling and tenderness than cuts that cost twice as much. Pound for pound it punches above its weight. It is the welterweight champion of the meat case. The other so-called premium cuts — and I love a ribeye, I'll never speak ill of a ribeye, ribeye is a national treasure — but for a weeknight, for the everyday grill, for the cookout where you're feeding six people on a Tuesday and not trying to take out a small loan to do it, flat iron is the answer. Hands down.
The technique is dead simple, and that's the beauty of it. Salt it early. Sear it hot. Rest it properly. Slice it thin across the grain. Four steps. Four. If anyone tries to sell you a 9-step recipe for a flat iron steak that involves sous-vide bags and a torch and a 12-hour marinade and a 'finishing salt sourced from a specific cave in Brittany,' run. Run away. They're trying to sell you something. The cut itself does ninety percent of the work — you just need to not screw it up. That's the whole job. That's the assignment.
Ingredients
- 2 lbflat iron steak (about 1.5 inches thick)(ask the butcher to cut from the top blade)
- 2 tspkosher salt
- 1.5 tspcoarsely cracked black peppercorns
- 1 tspgarlic powder
- 2 tbspneutral oil (avocado or grapeseed)
- 4 tbspunsalted butter, softened
- 2 clovesgarlic, grated to a paste
- 1 tbspfresh parsley, chopped
- 1 tbspfresh chives, chopped
- 1/2 tsplemon zest
- as neededflaky sea salt, to finish
Steps
- 1
Pull the steak out of the fridge 30-45 minutes before cooking to take the chill off.
- 2
Mash the softened butter in a small bowl with the grated garlic, parsley, chives, and lemon zest. Set aside at room temperature.
- 3
Pat the steak completely dry. Season aggressively on both sides with the kosher salt, cracked pepper, and garlic powder. Press the seasoning into the surface.
- 4
Heat a heavy cast iron skillet (or grill grates over high heat) until ripping hot, about 5 minutes. Add the oil and swirl.
- 5
Lay the steak in the pan and do not move it. Sear undisturbed for 3-4 minutes until a deep dark crust forms.
- 6
Flip once. Sear the second side for 3 minutes for medium-rare, or until an instant-read thermometer reads 125-128°F at the thickest part.
- 7
Transfer the steak to a cutting board. Immediately top with a generous spoonful of the herb butter and let it melt down over the meat.
- 8
Tent loosely with foil and rest at least 8 minutes.
- 9
Identify the grain of the meat (look for the long parallel lines of fibers). Slice thinly, 1/4-inch thick, on a slight bias and STRICTLY against the grain.
- 10
Spoon over any resting juices and remaining melted herb butter. Finish with flaky sea salt.
One more thing
And there's your flat iron. Mahogany crust, blush-pink interior, herb butter slicked across every slice, fanned out on a board like the cover of a steakhouse magazine. Serve it with a baked potato the size of a softball or a pile of grilled asparagus and you have made a forty-dollar steakhouse plate at home for the price of a sandwich. The meat scientists in Nebraska did us a favor. We are doing them a favor right back by cooking it correctly. Beautiful.

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