Peel, core, and slice each apple into 8 wedges.
Prepare a dredging station, place the flour into one shallow dish.
Crack the eggs into a second dish and beat with a fork.
In a third dish, combine the graham cracker crumbs, sugar, cinnamon, and a pinch of salt.
Place a sheet pan or large plate next to the graham cracker crumbs dish.
Dip each apple slice into the flour, tap off the excess.
Dip it into the egg and let the excess egg drip off.
Coat with the graham cracker crumbs, pressing them firmly onto the apple.
Place on a baking sheet and repeat for the remaining apples.
Coat with the cooking oil spray of your choice.
Preheat the air fryer at 380*F for 3 minutes.
Line the basket with parchment if preferred.
Cook in the air fryer or air crisp for the Ninja Foodi for 5-7 minutes, it's best to flip them after about 3 minutes to the other side.
Transfer to a wire rack and cool slightly before serving with warm caramel sauce.