freeze butternut squash

Can You Freeze Butternut Squash?

Although butternut squash is commonly considered and used as a vegetable, it is actually botanically classified as a fruit.

This delicious orange squash is versatile for use in both savory and sweet dishes which makes it a great ingredient to have around at all times.

The great thing about butternut squash is that it freezes well whether raw or cooked. This means you can keep leftovers, prepare butternut in advance for a quick-fix meal, or freeze an extra butternut squash you don’t need immediately to avoid waste and save money.

Here is everything you need to know about freezing butternut squash.

Types of Butternut Squash

Butternut squash, also known as butternut pumpkin or gramma, comes in different varieties. However, all types of butternut squash have an orange hard fleshy interior with a compartment of seeds towards the bottom center. The shade of orange may vary according to the variety. 

Butternut is popularly prepared in a variety of ways including roasted, sautéed, puréed into soup, mashed, fried, halved, and stuffed, incorporated into salads, mixed into batters for muffins, bread, and even into dessert pie fillings. 

Its sweet nutty flavor intensifies as it ripens and when it is cooked.

Butternut seeds can also be toasted and are edible. The skin is generally removed but if well cooked, it softens and is edible.

Can Butternut Squash Be Frozen?

Yes, butternut squash freezes well whether raw or cooked. Butternut squash will undergo slight changes on freezing resulting in a less firm texture, however, since butternut is mostly eaten cooked, the changes won’t be very noticeable.

As with most fresh vegetables, it is best to blanch butternut squash before freezing. Blanching the butternut in boiling water restricts the natural ripening enzyme activity which causes deterioration in color, flavor, and nutritional value.

Butternut squash that has been blanched will, therefore, last longer at a better quality in the freezer.

If you are planning to use the frozen butternut within 4 months of freezing, blanching is not necessary.

Butternut should not be frozen if it is not ripe, nor if it is of poor quality, showing signs of deterioration or nearing its expiry.

How To Freeze Raw Butternut Squash

Step 1: Clean

Wash and peel the entire butternut squash, cutting off the top and bottom ends.

Step 2: De-seed

Cut the butternut in half lengthways and remove the seeds and strands by scraping them out with a spoon.

Step 3: Chop

Cut the butternut into the desired size pieces either cubed, in thick slices, or cut into fries.

Step 4: Blanch

This step is optional and recommended if you are planning on keeping the butternut frozen for longer than 4 months.

Heat a pot of water till boiling. Fill a separate bowl with ice water. Throw the butternut squash into the boiling water and start timing once the water starts to boil again.

Butternut squash that has been cut into small cubes will only take 3 minutes to blanch, while larger chunks will take 5 minutes.

You do not want the butternut pieces to cook through, so remove them from the hot water immediately after the 3 to 5 minutes of boiling time and submerge them directly into the ice water to stop the cooking process.

Step 5: Dry

Once cold, remove the butternut pieces from the ice water and dry with a clean kitchen towel.

Step 6: Flash Freeze

Spread the butternut pieces in a single layer on a parchment-lined baking sheet. Place it in the freezer until just frozen.

This quick-freeze process prevents the butternut pieces from sticking together in a clump, allowing you to remove just as much as you need from the freezer at a time.

Step 7: Pack

Remove the baking sheet from the freezer and pack the frozen pieces into resealable freezer bags. Press out any remaining air at the top of the bag and seal.

Step 8: Label and Freeze

Label the freezer bag so you know how long the butternut squash has been stored and place it in the freezer.

How To Freeze Cooked Butternut Squash

Step 1: Cool

Regardless of whether the butternut squash has been cooked as mash or cubes, cool it down completely before preparing to pack.

Step 2: Pack

Once cooled, pack the butternut squash into resealable freezer bags in the desired quantities. Press out any remaining air at the top of the bag and seal.

Butternut that has been mashed or pureed can also be frozen in ice cube trays making it perfect to add to smoothies. Simply fill an ice cube tray with the butternut puree and freeze.

Once frozen, remove the butternut ice cubes from the tray, pack them into a resealable freezer bag, press out the air, and seal.

Step 3: Label and Freeze

Label the bags with the date and freeze. 

How To Thaw Frozen Butternut Squash

Raw butternut squash is best cooked from frozen. Remove the frozen pieces from the freezer bag, drizzle with olive oil, season, and place them in the oven directly for roasting.

Cooked butternut can be placed in the refrigerator to thaw overnight. To speed up defrosting, you can also place the sealed bag in lukewarm water for a few minutes.

Butternut soup can be reheated from frozen on the stovetop, or placed in a bowl, covered, and microwaved using the defrost setting. Stop to stir the soup in the microwave at 60-second intervals to ensure even heating.



Whether eaten as a mash, fried, stuffed, roasted, or baked into muffins, butternut squash is a delicious veggie and so versatile that it can even be sneaked into desserts. Butternut squash freezes very well with its flavor and color remaining mostly unchanged.

Whether you are saving leftovers, saving money by buying in bulk, or doing meal-prep for convenient week-night dinners, freezing butternut squash is easy and very worthwhile.

Don’t forget to check our other guides on how to freeze pumpkin pie and canned pumpkin puree.

*image by lohvynenko/depositphotos

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