Flank steak is a lean cut of beef that takes on flavors of marinades and rubs like a champ. But, it has amazing flavor simply seasoned with salt + a little pepper.  It grills quickly, so take care not to over-cook it as that can result in a tougher texture. Grill it to medium-rare (130°-140°) or medium (145°), allow it to rest, and slice it against the grain for optimum results — tender bites perfect for topping flat bread or using in tacos, fajitas or sandwiches.