Grilling pork quickly not only keeps it moist but adds a charred, smoky flavor that is lovely in these tacos. Remember to grill the cutlets only until they’re just cooked through; leave them on the heat any longer and they can dry out.
Eight 1/4-inch-thick pork loin cutlets (about 2 pounds)
1 large sweet onion, such as Vidalia, cut crosswise into 1/2-inch-thick rounds
2 tablespoons extra-virgin olive oil
Kosher salt and freshly ground pepper
2 teaspoons chile powder
Eight 6-inch flour or corn tortillas, warmed
1 Hass avocado halved and sliced lengthwise
1/2 cup cilantro leaves
Sour cream and lime wedges, for serving
Light a grill or preheat a grill pan. Arrange the cutlets and onion on a large baking sheet. Brush all over with the oil and season with salt and pepper. Season the cutlets with the chile powder.
Grill the onions over moderately high heat, turning once, until charred and tender, about 8 minutes. Transfer to a cutting board and cover with foil to keep warm. Grill the cutlets, turning once until just cooked through, about 2 minutes.
Transfer the pork to the cutting board. Coarsely chop the onions and cut the pork into 1/2-inch strips; transfer to a platter. Serve with the tortillas, avocado, cilantro, sour cream and lime wedges.