In a small bowl, combine the rosemary leaves, garlic, crushed red pepper and enough olive oil to make a loose paste. Slather the steaks with the mixture and sprinkle them generously with salt. Let the steaks hang out outside the fridge to come to room temperature.
Preheat the grill to medium-high. Use a wire grill brush to loosen any crud and soot. Wipe the grill down with an oiled side towel to pick up any bits of loosened crud.
Put the steaks on a hot spot on the grill to get a great sear and really create BROWN FOOD! Once both sides of the steak are really nice and brown, move the steak to a cooler part of the grill to allow the steaks to cook to desired temperature. About 5 to 6 minutes on each side for medium-rare.
Remove the steaks from the grill and let rest for 5 to 10 minutes.
Cut the steak off the bone, slice across the grain and divide among 4 serving plates. Drizzle the steak with a little big fat finishing oil and a sprinkling of sea salt.