01 -
Heat the oven to 200°F (95°C). Line two large baking sheets with parchment paper.
02 -
Wash and dry the apples. Core them if desired, then slice into even 1/8-inch rounds using a mandoline or sharp knife.
03 -
Brush or toss the apple slices lightly with lemon juice. Sprinkle both sides with cinnamon, a tiny pinch of salt, and maple sugar if using.
04 -
Place the slices on the prepared baking sheets in a single layer with no overlap. Use a third pan if needed so the apples can dry properly.
05 -
Bake for 1 hour, flip the slices, then bake for 1-1 1/2 hours more until the edges curl and the centers look dry. Rotate the pans halfway through if your oven has hot spots.
06 -
Turn off the oven and crack the door open for 20 minutes. Move the chips to a rack and cool completely before storing in an airtight container.