How long do cooked onions last in the fridge or freezer? The exact answer to that question depends to a large extent on storage conditions — refrigerate onions within two hours of cooking.
To maximize the shelf life of cooked onions for safety and quality, refrigerate the onions in shallow airtight containers or resealable plastic bags.
Properly stored, cooked onions will last for 3 to 5 days in the refrigerator.
How long can cooked onions be left at room temperature? Bacteria grow rapidly at temperatures between 40 °F and 140 °F; cooked onions should be discarded if left out for more than 2 hours at room temperature.
To further extend the shelf life of cooked onions, freeze them; freeze in covered airtight containers or heavy-duty freezer bags.
How long do cooked onions last in the freezer? Properly stored, they will maintain best quality for 10 to 12 months, but will remain safe beyond that time.
The freezer time shown is for best quality only — cooked onions that have been kept constantly frozen at 0° F will keep safe indefinitely.
How long do cooked onions last after being frozen and thawed? Cooked onions that have been thawed in the fridge can be kept for an additional 3 to 4 days in the refrigerator before cooking; onions that were thawed in the microwave or in cold water should be eaten immediately.
How to tell if cooked onions are bad? The best way is to smell and look at the onions: discard any that have an off smell or appearance, do not taste first.
Sources: For details about data sources used for food storage information, please