Flatiron steak.... what's the best way to cook ????
I put a cast iron pan in the oven at 500f and heat for 30 min. Then put the hot pan on the oven at high for 5 min sear the steaks 30 sec each side. then put the pan in the 500f oven for 2 min each side. (I salt/pepper, and brush with oil before hand) after cooking move to a plate cover and rest for 5 mins. This is how Alton Brown does them on youtube. I'm a big time griller, and have switch to this for my steaks.
I bought this recently in a small town in Oregon while camping. The cut wasn't familiar, but the grain looked like flank. Since I just had a small camp stove, I chose to cut it into thin strips, across the grain, and saute those quickly in the fry pan. At home I'd probably cook it whole. Seasoning with salt and pepper, or a marinade, and searing/roasting in a preheated cast iron skillet in a hot oven (400+) is an easy way of cooking steak (or fish) like this.
Depending on how it is trimmed, there may be a layer of connective tissue along one side.
Use a cast iron pan or other skillet...heat the pan well, season the steak with your choice of rub...salt and pepper would be fine. Sear the steak until done to your likeness. The important thing will be getting the pan hot , so that you get a good sear on the outside of the meat. seal in the juices....Then let sit for 3-4 minutes after you are done cooking to let the juices set inside the meat...serve