The shelf life of croutons in the refrigerator can vary depending on various factors, including the ingredients used, the manufacturing process, and whether they are homemade or store-bought. Generally, store-bought croutons that are unopened and properly sealed can last for several months in the refrigerator.
Once the package is opened, the croutons' freshness may start to deteriorate, and they might become stale over time. To maintain their quality, it's best to keep them in an airtight container or resealable bag to prevent exposure to air and moisture.
Homemade croutons, which often lack preservatives found in store-bought versions, may have a shorter shelf life in the refrigerator. It is recommended to consume them within a week or so for the best taste and texture.
Always check the packaging or refer to any "best by" or "use by" dates provided by the manufacturer. If the croutons show any signs of mold, off smells, or a significant change in appearance, it's best to discard them, as they might not be safe to eat.