Now, drying oranges is super simple, but I’ll admit – I’ve definitely ruined a few batches in the past. Slice the oranges as thin as you can – about 1/4 inch thick. Any thicker, and they’ll take forever to dry. Lay them on a baking tray lined with parchment paper and bake them at 100°C (about 200°F) for 3-4 hours.
Here’s where I messed up once: I turned up the heat because I got impatient. Don’t do that. They’ll brown and look sad instead of bright and festive. Flip them every hour, and you’ll get perfect, translucent slices that practically glow in the lights.