Method
Preparation
Preheat the oven to 225°F.
Thinly slice navel oranges, to between ⅛ – ¼ inch thick.
Lay the slices in a single layer on parchment-lined baking sheets.
Drying
Bake the orange slices for 2 hours, rotating halfway through.
Remove the oranges from the oven and flip them over.
Return the orange slices to the oven and bake for another 1 ½ – 2 hours, or until they are dried.
Let the slices cool, as they will continue to dry.
Storage
Store in an airtight container for up to 6 months.
Notes
For best results, slice oranges with a sharp knife or a mandoline. If slices get soft, dry them again in the oven briefly.