How Long Crispy Fried Onions Will Stay Good Once Opened - Tasting Table
Briefly

Crispy fried onions are a staple in holiday dishes like green bean casserole. While homemade versions are short-lived, store-bought varieties can last up to two years if kept in a sealed container stored in a cool, dry pantry. To maintain their quality, they should be kept away from heat and moisture; the pantry is the ideal location for storage. Avoid the fridge or freezer to prevent moisture damage, and consider transferring them to airtight containers if the original packaging is compromised.
Store-bought crispy fried onions, when stored properly in a cool, dry place, can last up to 24 months, significantly longer than homemade options.
To maximize their shelf life, keep crispy fried onions away from heat, moisture, and direct sunlight, preferably storing them in a well-sealed container.
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