Use day-old or slightly stale bread for best texture. Cut bread into uniform cubes for even baking. Avoid overcrowding the baking sheet to ensure croutons crisp properly. Toss halfway through baking for even color. Adjust seasoning to taste, such as adding paprika or chili flakes. Let croutons cool completely before storing to prevent sogginess. Variations include using different herbs, adding cheese, or making them spicy or sweet.