1 medium apple, such as Honeycrisp, Gala or Fuji, cut into thin circles,
1/2 teaspoon ground cinnamon
- Preheat oven to 200°F and line a rimmed baking sheet with parchment paper. Place apple slices in a single layer onto baking sheet. Sprinkle with 1/4 teaspoon cinnamon. Flip slices over and sprinkle with remaining cinnamon.
- Bake apple slices for about 1 hour. Flip apple slices and cook for about 1 more hour. Apple slices should be crisp. Store in an airtight container for up to 1 week.