Once preheated, place the muffins in the air fryer basket cut side up.
Set to cook at 400F / 200c for 5 minutes.
Check for doneness from 3 minutes. For crispier browner muffins, cook for up to 8 minutes.
Notes
Preheat your air fryer to get the best toasted English muffins.
Don't overlap the muffins in the basket or they won't toast evenly.
The timings may vary depending on the model of your air fryer. Check often during the first batch and remove when golden brown.
You can air fry the English muffins for a shorter or longer time depending on how toasted you like them. Between 3 and 8 minutes for a lighter or darker toast.
Don't use a knife to cut muffins, use a fork to get a better textured surface.