This cut of beef takes exceptionally well to marinades—flavor easily seeps into the grooves of its prominent muscle fibers. Flank steak is lean and not very thick, so it only requires a quick ...

Add the flank steaks and turn to coat ... Thinly slice the steaks across the grain. Top the chilaquiles with the sliced steak and any accumulated meat juices. Scatter the avocados, Cotija cheese ...