Preheat the oven to 225 degrees Fahrenheit.
Using a spiralizer or mandolin, slice the apples thinly crosswise (up to ⅛th inch thick). Remove any seeds.
Arrange the slices on two baking racks or on two parchment-lined baking sheets. Sprinkle the slices with a light dusting of cinnamon and sugar.
Bake in the preheated oven for 2 hours. If using parchment-lined baking sheets, flip the slices over after an hour.
After baking, turn the oven off. Let the chips cool completely in the oven, then enjoy!
Store in an airtight container for up to a week.