Kosher salt and freshly ground pepper
2 tablespoons vegetable oil
Season the steak liberally with salt and pepper, and allow to sit at room temperature for 15 to 30 minutes. Meanwhile, heat a grill pan over medium-high heat. Brush the steak with vegetable oil and cook on grill pan, undisturbed for 3 minutes. Flip the steak over and cook until the steak is 130 degrees F for medium rare, about 3 minutes more. Remove to a cutting board, and allow to rest a full 5 minutes before slicing. Cut the steak with a sharp knife against the grain into thin slices. Fan slices out onto a serving platter and top with the Poblano Pesto.