1. Wash apples
  2. Core apples
  3. Preheat oven to 225°F
  4. Slice apples into thin slices
  5. Put apples onto a cookie sheet lined with parchment paper
  6. Dust with cinnamon
  7. Bake for 35 minutes
  8. Flip over and bake for 40 minutes-1 hour
  9. Remove from oven when your preferred crispiness is reached