How to Make It
Light a grill. In a medium bowl, whisk the oils with the vinegar. Stir in the parsley, cilantro, piquillo peppers, garlic, onion, lime juice and crushed red pepper. Season the chimichurri with salt and pepper and let stand for at least 20 minutes.
Brush the steaks on both sides with the butter and season them with the smoked salt and pepper. Grill the steaks over moderately high heat, turning once, until nicely charred and medium-rare, about 8 minutes. Transfer to a platter and let rest for 10 minutes.
Cut the steaks into 1-inch-thick slices and arrange them on the platter. Spoon some of the chimichurri sauce over the steak and serve, passing more smoked salt and pepper along with the remaining chimichurri sauce on the side.
Smoked black pepper is available at adrianascaravan.com.