Wash and sort blueberries. set on paper towels to dry
Spritz with oil and toss with sweetener
For The Air Fryer Oven:
Preheat air fryer to 170 degrees
Spread blueberries on the racks into 1 layer with some space for air flow (you may need to do this in batches, I was able to use all 3 of my racks to fit the whole batch).
Dry blueberries for 6-8 hours shaking and rotating the racks every 2 hours.
For The Oven:
Preheat oven to 200 degrees
Line baking trays with parchment and spread berries evenly over the surface of your tray
Dry in the oven for 8-10 hours stirring berries every 2 hours.