How Long Can You Store Onions In The Freezer?

Make onions last longer by freezing them properly

To ensure onions remain fresh in the freezer for as long as possible, it's crucial to freeze them correctly. While you can freeze whole onions, simply tossing them in the freezer isn't sufficient. In fact, freezing whole onions requires more effort than freezing them diced, as you'll need to blanch them in boiling water first to prevent browning, followed by an ice bath before freezing. While this method is doable, remember that you'll need to thaw them before use, as attempting to slice a solid frozen onion can be quite challenging.

The most effective way to freeze onions is to slice or dice them (and there are some handy techniques to cut them without shedding tears). Sliced and diced onions don’t require blanching and are easier to portion, which is essential to avoid re-freezing. For both sliced and chopped onions, make sure to dry them thoroughly before placing them in a thick, airtight freezer bag. Given their strong odor, a sturdy bag will help keep their scent from affecting other foods.

We suggest freezing onions in small portions so you can easily access what you need without waste. Although the onions may stick together after freezing, a quick tap against your counter will help separate them. Alternatively, if you have the amount you need, you can add them directly to a hot skillet or boiling soup, and they will break apart as they cook.