Preheat your grill to high heat. If you don't have a grill, you can also use a cast-iron skillet or grill pan on the stovetop.
Season the steak generously with salt and pepper on both sides. You can also add any additional seasonings you like, such as garlic powder, onion powder, or smoked paprika, for extra flavor.
Once the grill is hot, place the tomahawk steak on the grill. Cook for about 5-7 minutes on each side for medium-rare, or adjust the cooking time according to your preferred level of doneness.
For medium-rare, the temperature should be around 130-135°F (54-57°C).
Let it rest for about 5-10 minutes before slicing. This allows the juices to redistribute throughout the meat, resulting in a juicier steak.