Fill a large bowl with water and lemon juice. Set aside.
Wash, core and peel apples. As you work through the fruit, drop sliced apples into a bowl of water and lemon juice. This will prevent apples from browning.
Next, layer apple slices onto dehydrator trays. Sprinkle cinnamon evenly across apple slices and repeat until all trays are full.
Set the dehydrator to 140 deg F for 6-8 hours. This dehydrating process may take more or less time, depending on your dehydrator. Halfway through the dehydrating process, rotate trays to ensure even dehydrating.
Store apple rings in an airtight glass container or plastic bag. Apples should easily keep for 6 months.
