You may recognize 8-65: Sizzling Skirt Steaks as basically fajitas, one of the standard Mexican restaurant menu features. If you’re looking for something different on taco night, consider this dish. This can even be modified for different types of proteins, or even add in a few more veggies or a meat substitute and go meatless.
Flank or skirt steak is taken from the underside of the cow, and is tougher than most other cuts of meat. Therefore, marinating it (especially with some acid) breaks down some of those fibers and gives you a more tender piece when it’s cooked. Cooking fast/hot works well with this type of cut–low and slow will give you tough and rubbery.