Heat a large cast-iron skillet over high heat. Sprinkle steaks evenly with 1/4 teaspoon salt and pepper. Add steaks to pan; cook 3 minutes on each side or until desired degree of doneness. Remove steaks from pan; let stand 5 minutes.
While steaks rest, combine remaining 1/4 teaspoon salt, chopped parsley, and remaining ingredients; serve over steaks.