Prepare the garlic butter by mixing the ingredients in a small bowl and set aside.
Rub the steaks with oil and season with salt and pepper. Add the steaks to the air fryer basket.
Air-fry for 10-16 minutes (10 minutes for medium-rare, 12 minutes for medium, 14 minutes for medium-well, and 16 minutes for well-done) or until desired doneness.
Remove the steaks to a plate and place a pat of butter on each. Let rest for 10 minutes before slicing.