Cut onions and potatoes. Slice them how you prefer. I cut potatoes into approximately 1-inch thick cubes. And slice onions to ¼ inch thick.
In a medium bowl add potatoes, onions, oil and seasoning and mix all ingredients.
Coat the potatoes and onions with the seasoning by tossing them.
Now preheat the air fryer at 375F/190C.
Transfer potatoes and onion to the air fryer basket/tray, and lay them in a single layer.
Air fry them for 10 to 15 minutes ( toss them every five minutes so that they will cook evenly from each side)
Add chopped fresh rosemary, to taste, for the last 5 minutes of cooking
Fry them until their desired color and crispiness.
