Start by patting your steaks dry and seasoning them generously with salt, black pepper, and garlic powder. I always leave them chilled until just before cooking to ensure a nice sear. This step locks in the juices and creates that irresistible crust.
Combine parsley, cilantro, garlic, red wine vinegar, olive oil, oregano, shallot, and red pepper flakes in a blender or food processor. Pulse until smooth but still slightly textured. Taste and adjust seasoning; I love mine with a touch more vinegar for brightness.
Preheat your grill or skillet until it’s smoking hot. Brush with oil to prevent sticking. Place steaks on the hot surface and cook 3-4 minutes per side for medium-rare. I press gently with a finger to check firmness, aiming for that “loose fist” feel.
Once cooked, remove steaks and let them rest for 5 minutes. This step is crucial; it allows the juices to redistribute. I always cover lightly with foil to keep them warm.
Slice steaks against the grain and spoon chimichurri sauce generously over the top. I find this presentation not only looks impressive but ensures every bite is flavorful. Serve immediately for best taste.