Bowl of sliced red onions on a wooden table - Westend61/Getty Images Frozen onions might save you some time and stress (and maybe even some dollars, since they won't go bad), but the real question is, ...

The best way to store whole onions is in a cool, dark, dry place, where they can last up to two months. Peeled, chopped, and cooked onions can last up to a week when stored in the fridge. Never store ...