Can You Freeze Zucchini? Yes, Blanch It First
Zucchini freezes best blanched: 3 minutes for slices, 1 to 2 minutes of steaming for grated. Get the steps, storage time and best uses.
Can you freeze zucchini? Yes, and blanching first gives the best result. The National Center for Home Food Preservation says to blanch half-inch slices for 3 minutes in water, or steam grated zucchini for 1 to 2 minutes if you'll bake with it.
Can you freeze zucchini?
Yes, though the texture changes. Zucchini is mostly water, so slices thaw soft. They work well in soups, sauces, stir-fries and baking, not as a crisp side dish. Our zucchini storage page says the same: shred and freeze for baking rather than freezing whole. Searches for "can you freeze zucchini squash" and "how can you freeze zucchini" all come down to this: cut it up, blanch it and cool it fast.
Freezing keeps zucchini safe, and food stored at 0°F stays safe indefinitely (USDA FSIS). The limit is quality, not safety, which is why the blanching step matters: it protects flavor, color and texture while the zucchini sits in the freezer.
How can you freeze zucchini?
Blanching, a brief scald, stops the enzymes that cause loss of flavor, color and texture (NCHFP). Follow NCHFP's summer squash method:
| Cut | Blanch | Pack |
|---|---|---|
| Slices, 1/2 inch thick | Water blanch 3 minutes | Cool promptly, drain, pack with 1/2 inch headspace |
| Grated, for baking | Steam blanch in small batches 1 to 2 minutes until translucent | Pack in measured amounts, cool the containers in cold water |
Steps for slices:
- Choose young zucchini with tender skin, wash it and cut it into 1/2-inch slices.
- Boil the slices for 3 minutes, then move them straight to ice water.
- Drain well, pack into bags or containers leaving 1/2 inch of headspace, and freeze (NCHFP).
For grated zucchini, pack it in amounts a recipe will call for, like 1 or 2 cups, so you can thaw just what you need. If it's watery once thawed, drain off the liquid before using it (NCHFP).
How long does frozen zucchini keep, and how do you thaw it?
NCHFP says fruits and vegetables at 0°F keep 8 to 12 months at best quality, with the shorter time giving the best result. USDA's FoodKeeper lists 10 to 12 months for summer squash and zucchini, and our zucchini storage page uses about 300 days. Where they differ, plan on NCHFP's shorter end, about 8 months, for the best texture.
Thaw frozen zucchini in the refrigerator, or add it frozen to soups and sauces (USDA FSIS). Once thawed, treat it like fresh zucchini and use it promptly. When in doubt, throw it out. Discard zucchini that smells off or feels slimy.
What changes when you freeze zucchini, and what should you use it for?
Slices go tender and release water. Grated zucchini goes soft and blends into batter.
- Zucchini bread and muffins, using the grated pack
- Soups, stews and pasta sauce
- Casseroles and frittatas
- Stir-fries, added straight from frozen so they don't turn to mush
For tips on cooking frozen vegetables, see how to cook frozen vegetables so they taste good. Planning to bake? Read can you freeze zucchini bread.
What foods are like zucchini for the freezer?
Other watery vegetables need the same care. See whether you can freeze celery, bell peppers and cabbage. The whole list lives in Can you freeze food?.
Keep track of frozen zucchini
A garden glut ends up buried in the freezer. Add three foods from your fridge and freezer to Well Stockd. Fridge items get an estimated expiration date; for freezer items, write the freeze date on the package. Try it free or see how to keep a freezer inventory.
FAQ
Do you have to blanch zucchini before freezing?
NCHFP's method blanches it: 3 minutes for slices, 1 to 2 minutes of steaming for grated. Unblanched zucchini keeps its enzymes active and its quality drops faster.
Can you freeze raw zucchini without blanching?
You can, but NCHFP's method blanches it, and unblanched zucchini loses quality faster. If you skip it, use the zucchini soon.
Should you drain frozen zucchini after thawing?
Yes, if it's watery. NCHFP says to discard the liquid before using the zucchini.