Pre-heat your air fryer to 200C (400F approx) for 2-3 minutes.
Slice the English muffins in half horizontally.
Place the English muffin slices in the air fryer basket with the cut side up. If your air fryer oven has racks then you'll want to use the lower racks to keep them away from the heating element.
Only have one layer to ensure evenly cooking and to stop them from blocking the air flow.
You don’t need to use any olive oil, or spray oil, when toasting muffins, like I might suggest with other air fryer recipes.
Air fry for 3-4 minutes, turning the muffins at least once during the cooking time.
You may find that your air fryer distributes the air well enough not to really need to turn, but I like to ensure even cooking wherever I can! Especially as it just takes a few seconds with a pair of tongs.
Remove when golden brown. You can adjust the cooking time up or down based on your own preferred toasting level. I prefer a medium / golden brown, so that is what the cooking times in this recipe are based upon.
Spread the butter over while still warm and enjoy!