Separate the egg whites and yolks.
Mix low-fat milk and erythritol in a bowl.
Add some yolk and the low-fat milk mixture to the egg whites, and mix well.
Cut slices of bread and lay them into the air fryer tray.
Pour the mixture over the bread and bake in the air fryer at 160°C for 10 minutes.
Let it cool after baking, then serve.