Pepper ramesco sauce and medium-rare steak are a winning combo.
In food processor, pulse first 8 ingredients with 6 tbsp. oil until blended; season romesco sauce. Brush steak and scallions with more oil; season. Grill steak over high heat until medium-rare, about 4 minutes per side. Grill scallions until crisp-tender, 1 to 2 minutes per side. Slice steak. Serve with scallions and romesco sauce.