Remove the steak from the fridge 30 minutes to 1 hour before you’re ready to grill. Place on a plate, then sprinkle generously with salt and pepper on both sides. Rest at room temperature (never in the sun) for at least 30 minutes, but no more than an hour.
Clean and oil your grill grates. For a gas grill, preheat the grill to high heat (500+ degrees), with direct flame on all but one section. For charcoal, prepare one area for high heat cooking directly over the coals and one for indirect cooking.
Place the steaks over direct heat and cover the grill. Sear for 1-1.5 minutes, then lift and turn the steak 90 degrees. Return to the grill. (This is how you get that lovely grill pattern!) Sear another 1-1.5 minutes, then flip the steak over completely. Sear for another minute, then turn the steak 90 degrees, placing the filet side over indirect heat. Continue to cook the steak another 3-5 minutes, or until you reach your desired temperature. We like to pull it around 135 degrees for a medium rare steak.
Plate the steaks, top with a generous pat of Cowboy Butter, and tent with foil. Rest for 7-10 minutes before slicing.