Preheat the air fryer to 150C/300F. Spray oil in an air fryer basket.
Add the bratwurst in a single layer in the air fryer basket.
Cook for 8-10 minutes, flipping halfway through.
Notes
TO STORE: Place leftovers in the refrigerator, covered, for up to 5 days.TO FREEZE: Place the cooked and cooled brats in a ziplock bag and store it in the freezer for up to two months.TO REHEAT: Reheat the bratwurst in the microwave, non-stick pan, or air fryer.