Toss the bread cubes with melted butter and seasoning until evenly coated.
Arrange in a single layer in the air fryer basket, leaving space between pieces so they crisp properly.
Air fry for 8–12 minutes, tossing halfway through, until golden and crunchy.
Cool slightly before serving — they’ll continue to crisp as they rest.
Notes
Everyone's air fryer will cook at a different rate. 10 minutes is the average cook time, but it could take a little less time or a little more time. Just keep an eye on the croutons and toss them to allow for even cooking and perfect crispiness.