Slice your bread into cubes and place into a large mixing bowl.
Some people remove crusts, but it can be your own preference whether you remove them. If you're looking to reduce food waste then leaving the crusts on is ideal.
Drizzle melted butter or olive oil over the cubed bread.
Add salt & pepper, garlic salt/powder and the herbs of choice. I love to use dried basil, as this brings lots of nice flavour without being overpowering. I find a teaspoon works well for around 3 pieces of bread.
Toss well until the croutons are all coated.
Place into the air fryer basket.
Air fry at 200C (390F) for 3-4 minutes, until well browned and ready to enjoy. I like to shake halfway through, just to avoid any sticking.
Store in an airtight container and they'll keep for 3 days at least.
I love to make different flavoured croutons such as salt and pepper ones for soups, then ones with basil and garlic for salads. We often prepare salads in advance in our home, for time saving. When I need breadcrumbs I love to blitz together the basil and garlic flavour ones, as these work so well for things like topping bacon, mac and cheese pasta bake or air fryer mac and cheese.
Easy tip: If you want to save some time then brush the bread and THEN cube it. You'll have some bare edges but it is time and effort saving.