In a small bowl – add all spices. Using a whisk – combine spices, making sure to break up the pesky brown sugar.
Sprinkle a generous amount of spice mix onto a plate. Lay one steak on top of spices. Then season steak liberally with spice mix and rub into meat evenly. Flip to make sure other side is seasoned properly as well.
Pick up steak and press all sides into remaining spice mix on the plate so that none of the spices are wasted.
Let steak sit for at least 20 minutes to come to room temperature. This help the steak cook evenly.
Meanwhile - Prepare air fryer tray by coating with oil to prevent sticking. Preheat air fryer to 390 degrees for at least 3 minutes.
Cook steak undisturbed for 9 minutes. Do not flip and do not open.
Once cook time is finished, remove from air fryer and let rest for at least 5 minutes before slicing.