Set your oven to 215°F and line a baking sheet with parchment paper.

Wash the oranges thoroughly and slice them evenly into 1/8-inch thick rounds. Thinner slices will dry more quickly and evenly. Pat them dry with a paper towel to remove excess moisture.

Arrange the slices in a single layer on the prepared baking sheet, ensuring they don’t overlap.

Bake for 4 hours, flipping each slice halfway through to ensure even drying.

Remove the slices from the oven and let them cool completely. They should be dry but slightly pliable. Store in an airtight container for up to 1 month.