Wash and peel the apples.
Slice them as thinly as you can. The thinner and crunchier.
Spread the thinly sliced apple on a baking sheet over parchment paper.
Sprinkle the apples wight he sugar and cinnamon mix
Bake at 250F for 1 hour
Turn the apple slices and sprinkle more sugar cinnamon (to taste)
Bake for another hour.
Remove and let it cool off before storing.