Preheat your air fryer on the hottest setting with the basket or cooking surface inside during the preheat. Cube up bread into the size croutons you want.
Melt the butter and let cool slightly. Mix the butter and seasonings in a small container or jar. Place the bread cubes in a large bag or bowl. Pour the butter mixture over the top and toss to coat the bread crumbs.
Place the seasoned bread cubes into the basket of the air fryer and select 375°F/190°C for 20 minutes. Toss and spritz with oil every 3-5 minutes until the croutons are done to your likely.
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