A flat iron steak is a steak cut from the shoulder of the cow. The cut of meat the steak comes from is dissected by a band of tough connective tissue, and scientists figured out a way to remove it and create the flat iron steak.
The steak gets its name from its resemblance to a flat iron. It is a very tender and flavorful cut and is excellent for grilling. It does best when marinated and not cooked past medium. The flat iron steak is also called the top blade steak. Flat iron steak can substitute for skirt or flank steak in recipes.