Can You Freeze Green Onions? Yes, for Cooking
Green onions freeze well chopped and unblanched, but they lose their crunch. Learn the method, storage time and best uses.
Can you freeze green onions? Yes, and you don't need to blanch them first. They come out soft and a little tough instead of crisp, so use them in cooked dishes like soups and stir-fries, not as a fresh garnish.
Can you freeze green onions?
Yes. The National Center for Home Food Preservation (NCHFP) says young green onions may be chopped and frozen without blanching, but they will not be crisp. They keep a strong flavor and can turn slightly tough. That is the whole trade: you give up crunch and keep taste.
If you only use green onions for cooking, freezing is a good way to stop half a bunch from going slimy in the fridge. In the fridge, whole ones last about 1 to 2 weeks and sliced ones 3 to 5 days, per our green onion storage page.
How can you freeze green onions?
- Trim the roots and any dry tips, then wash and dry the onions very well. Water on the surface turns into ice clumps.
- Chop them the way you cook with them, white and green parts together or separately.
- Spread the pieces on a tray and freeze until firm, then pack them. NCHFP gives this tray method or packing them dry, leaving 1/2 inch of headspace.
- Squeeze out as much air as you can and label the bag.
Green onions smell strong, and the smell travels. Double-bag them or use a sealed container so the rest of your freezer doesn't pick it up (HGTV). If you only need a little at a time, small flat bags let you snap off a piece.
How long do frozen green onions keep, and how do you thaw them?
NCHFP's timing is for diced onions, which are best used within a few months. USDA's FoodKeeper lists 10 to 12 months for green onions, and our green onion storage page uses about 180 days. Those figures differ, so I'd go with the most cautious one, a few months, and use the oldest bag first. All of them are about flavor and texture: frozen food kept at 0°F stays safe (USDA FSIS).
You don't need to thaw them. Drop frozen green onions straight into a hot pan, a pot of soup or a pot of rice. If a recipe needs them raw, such as a dressing, thaw them in the fridge and drain off the liquid. Frozen green onions are moist once thawed (Runaway Rice), so a raw topping will be soggy. When in doubt, throw it out: toss any that smell sour or look slimy.
What changes when you freeze green onions, and what should you use them for?
| Part | After freezing | Good for |
|---|---|---|
| White and light green stems | Soft | Stir-fries, soups, fried rice |
| Dark green tops | Sometimes tough | Soups, stews, eggs |
| Any part | Not crisp | Not for salads or garnish |
You can also stir them into butter or cream cheese for a savory spread. For a fresh topping, keep a few whole green onions in a jar of water on the counter or in the fridge, where the roots regrow them for a while.
What foods are like green onions for the freezer?
Freezing works for other cooking herbs and alliums too. See how to freeze fresh herbs, whether you can freeze celery, and bell peppers. The full list is in Can you freeze food?.
Keep track of frozen green onions
A bag of chopped green onions is easy to forget. Add three foods from your fridge and freezer to Well Stockd. Fridge items get an estimated expiration date so the oldest comes up first; for freezer items, write the freeze date on the package. Try it free, or read about keeping a freezer inventory.
FAQ
Do you have to blanch green onions before freezing?
No. NCHFP says green onions can be chopped and frozen without blanching. Blanching is for mature bulb onions, which need 3 to 7 minutes.
Can you freeze green onions whole?
You can, but chopped is easier to use. Whole frozen stalks are awkward to cut once they're solid.
Can you use frozen green onions as a garnish?
Not a good one. They thaw soft and wet. Use fresh green onions for garnish and frozen ones for cooking.