In this guide, we will be using the Ninja Air Fryer (any air fryer will do, but you may need to adjust cooking times)
Purchase a steak with a thickness of about an inch or a little less than an inch (not frozen)
Set the temperature to 400° and time for 6 minutes. Put the steak in (you can add chunks of beef fat in there if you want).
Let the air fryer cook (you may want to turn on your air vent if you have one, there’s not a ton of smoke but there is a little bit)
Once the 6 minutes are up, flip the steak and keep the temperature the same but change the time to 4 minutes
Once the 4 minutes are up you can take your steak out. This temp/time amount will most likely give you a medium-rare steak, so if you want it to get to medium put it in for another 2-3 minutes
Enjoy!