Remove steaks from fridge 20-30 minutes before cooking, to bring them to room temperature. Season steaks on both sides with salt and pepper.

Make herb butter by combining the ingredients in a bowl. Refrigerate until ready to use.

Preheat air fryer to 400 degrees F.

Air Fry: Grease the air fryer basket or pan with non-stick cooking spray, and add steaks. (Cook steaks one at a time if they fit too closely together). Cook for 4 minutes, then flip, and cook for an additional 3-5 minutes, until desired doneness. Use a meat thermometer for best results: 130-135 degrees F for medium rare, 135-140 for medium.

Rest: Remove steaks to a plate and cover with foil to rest for 5-10 minutes. Add a spoonful of herb butter on top of each warm steak, before serving.