Slice your apples into desired size. Add oat flour and apple slices to a gallon ziplock bag. Toss to coat.
Add your eggs to a bowl and whisk.
Add graham cracker crumbs and sugar to a separate gallon ziplock bag.
Dip apples into egg wash, then place into ziploc bag with graham cracker crumbs + sugar. Shake the bag until all the apple slices are coated in the mixture.
Line up the apple slices in a single layer in the air fryer. Spray with cooking spray.
Turn heat to 380 and air fry for five minutes. Open and flip to the other side, spray with cooking spray, and air fry for another two minutes.
Oven instructions: Follow above steps but place on baking sheet and bake at 350F for 15-20 minutes, flipping halfway through.