How to Freeze Acorn Squash (Raw or Roasted)
Learning how to freeze acorn squash will allow you to preserve this fall favorite for soups, baking, casseroles, and side dishes. Whether you freeze it roasted as a puree or raw in cubes, you’ll have acorn squash ready to use long after the growing season ends.
Every fall I stock my freezer with acorn squash because it can be used in so many ways in the kitchen. My favorite method is to roast it until it’s tender, scoop out the flesh, puree it, and freeze it in convenient portions. Having it already cooked makes meal prep much easier throughout the year.
If you’ve been wondering whether you can freeze acorn squash, the answer is absolutely yes. You can freeze it either roasted or raw, and both methods work well depending on how you plan to use it. Below I’ll show you exactly how to freeze each one so you can choose the method that fits your cooking style.
And if you’re stocking your freezer with more than just acorn squash, I’ve got easy guides for that too. You can learn how to freeze bok choy, how to freeze grapefruit, how to freeze lemon juice, and how to freeze poblano peppers so nothing from your market haul goes to waste.
How to freeze roasted acorn squash
Freezing roasted acorn squash is a good choice if you want cooked puree ready to use without any additional prep.
Cut the acorn squash in half lengthwise and scoop out the seeds and stringy center with a spoon. Place the halves cut side down in a baking dish with a small amount of water or on a silicone lined baking sheet, then roast until the flesh is tender when pierced with a fork.
Let the squash cool completely before handling it. Once cooled, use a spoon to scoop the flesh away from the skin. Puree the flesh in a food processor, blender, immersion blender, or mash it by hand if you prefer a slightly coarser texture.
Divide the puree into recipe-sized portions and transfer it to freezer-safe containers or freezer bags. If using bags, press out as much air as possible and freeze them flat to save space. Label each container with the contents and the date before placing it in the freezer.
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How to freeze raw acorn squash
Freezing raw acorn squash is a good choice if you prefer to cook it after thawing or want cubes ready for roasting, steaming, or boiling.
Wash and dry the squash, then cut it in half lengthwise. Scoop out the seeds and stringy center before cutting each half into wedges. Peel away the skin with a vegetable peeler or paring knife, then cut the flesh into evenly sized cubes.
Spread the cubes in a single layer on a parchment-lined baking sheet, leaving a little space between each piece. Freeze until the cubes are completely solid, about 2 to 4 hours.
Transfer the frozen cubes to freezer-safe bags or airtight containers, removing as much air as possible before sealing. Label each package with the contents and the date, then return it to the freezer. Freezing the cubes individually first prevents them from clumping together, making it easy to remove only the amount you need.
Storage life
Properly packaged roasted acorn squash puree and raw squash cubes maintain their best flavor and texture in the freezer for 10 to 12 months. Freezer-safe bags or airtight containers with as much air removed as possible will help protect the squash from freezer burn.
Although frozen acorn squash remains safe to eat if kept continuously frozen, its quality will gradually decline over time. If you notice excessive ice crystals, freezer burn, an off odor after thawing, or other signs of spoilage, discard it. Using the oldest packages first helps ensure you’re always cooking with squash at its best.
Thawing frozen squash
Roasted acorn squash puree is best thawed overnight in the refrigerator. If you need it more quickly, place the sealed container or freezer bag in a bowl of cold water, changing the water every 30 minutes until thawed. Stir the puree before using, as a small amount of liquid may separate during freezing.
Raw acorn squash cubes can be cooked directly from frozen for most recipes, so thawing usually isn’t necessary. If you prefer to thaw them first, place the cubes in the refrigerator overnight before cooking.
Once thawed, use either roasted puree or raw squash within 3 to 4 days. Do not refreeze thawed squash.
Cooking with thawed squash
Thawed roasted acorn squash puree is ready to use as soon as it’s stirred to recombine any liquid that separated during freezing. I love using it to make my homemade acorn squash soup because the squash is already cooked and ready to blend into a smooth, creamy soup. It also makes an excellent substitute for pumpkin puree in recipes like my rustic pumpkin galette, pumpkin cornbread from scratch, easy pumpkin bagels, and pumpkin cranberry scones.
You can use it in creamy soups, pasta sauces, casseroles, muffins, quick breads, pancakes, waffles, pies, cookies, or simply reheat it with butter, fresh herbs, maple syrup, honey, or warm spices for an easy side dish.
If you froze raw acorn squash cubes, cook them just as you would fresh squash. Roast, steam, or boil the cubes until they are fork tender, then serve them as a side dish or puree them for soups, sauces, baked goods, and other recipes.
Keeping frozen acorn squash on hand makes it easy to enjoy this versatile winter squash in recipes throughout the year.
Freezing acorn squash is such a great way to enjoy the harvest long after the season ends — perfect for meal prep, soups, or cozy sides anytime. This step-by-step makes it so easy to do at home! If you give it a try, I’d love to hear how you plan to use your frozen squash. Leave a comment below to share or ask any questions — I’m always here to help!