These air fryer ahi tuna steak slices are marinated in dark sauce, then perfectly fried in an air fryer (or stovetop instructions included) until medium-rare, have a smoky flavor, and simply just melt in your mouth.
Place a pan over medium heat. Once the oil is hot add tuna steak and sear for 2 minutes on one side. Flip the tuna and sear the other side for another 2-3 minutes. (For at least 2-3 inches thick steak)