Start by thoroughly washing your apples. Apples from a farm are usually covered in pesticides. Apples at your grocery store almost always have a waxy coating you need to remove. Either way, don’t skip this step!
When cutting the apples, you can either core them or you could leave the seeds in the apples. Either way works. Once they are washed and cored, use a mandolin or sharp knife to make rounds that are about ⅛ of an inch thick.
Preheat your air fryer to 390 degrees F. If you are using both cinnamon and salt, mix them in a small bowl. Otherwise, rub the cinnamon into the apple slices and then arrange them on the bottom of the basket. Place only as many slices that it takes to form a single layer without overlapping the slices.
Cook the apple slices for 8 minutes and flip halfway through the cooking time. If they are crisp enough to your liking, you can remove them from the fryer and repeat as needed for the remaining apples.
If you want them to be crispier, add a small amount of time to the air fryer. We recommend only adding 1 minute at a time until the desired crisp level is reached.