This grilled skirt steak is marinated in a simple mix of citrus juice, olive oil, and spices before it hits the grill, then finished with bold, garlicky, homemade chimichurri sauce for the perfect flavor pairing.
At least 2 hours before serving, whisk the olive oil, Worcestershire sauce, lime juice, orange juice, garlic powder, onion powder, salt and pepper together in a small bowl.
Place the skirt steak in a resealable bag or shallow dish. Pour the marinade over the steak, turning to coat. Cover and refrigerate, turning once after about an hour.
About 30 minutes before you're ready to grill, remove the steak from the refrigerator to bring it to room temperature.
While the steak is coming to room temperature, prepare the Chimichurri Sauce.
Grill the steak:
Preheat a gas or charcoal grill to medium-high heat (475 to 500°F). Lightly oil the grates.
Grill the skirt steak for 2 minutes on the first side, then 2 to 3 minutes on the second side until the internal temperature reaches 125°F (medium rare).
Transfer to a cutting board and let rest for 10 minutes. Slice thinly across the grain at a slight angle.
Transfer the sliced steak to a serving platter, drizzle with chimichurri, and serve the remaining sauce on the side.