How Do You Can Spaghetti Squash

This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases. If you click a link and make a purchase, I may receive a small commission at no extra cost to you.

You can spaghetti squash by roasting it whole in the oven, then cutting it open and scraping out the stringy, pasta-like flesh.
 
It’s one of those wonderful kitchen tricks that feels almost magical the first time you try it.
 
If you’ve ever wondered how do you can spaghetti squash, the answer is simpler than you might think, and it opens up a world of easy, healthy meals you can enjoy anytime.
 
In this post, we’ll walk through exactly how to can spaghetti squash safely, from choosing the right squash to processing the jars so they last for months.
 
Let’s dive in.
 

Why You Can Spaghetti Squash at Home

Canning spaghetti squash at home is a fantastic way to preserve your garden harvest or take advantage of a great sale at the grocery store.
 
When you can spaghetti squash properly, you get shelf-stable jars of ready-to-use strands that work in casseroles, stir-fries, and soups.
 
Here’s why it’s worth the effort:
 

1. It Saves Money and Reduces Waste

Spaghetti squash can be pricey when it’s out of season, but during peak harvest it’s abundant and cheap.
 
When you can spaghetti squash, you lock in that low price and avoid letting extra squash spoil on the counter.
 
A single large squash can fill two or three pint jars, which means months of meals for just a few dollars.
 

2. You Control the Ingredients

Store-bought canned squash often contains added salt or preservatives you don’t need.
 
When you can spaghetti squash yourself, you know exactly what’s in the jar, and it’s just squash and water.
 
That makes it perfect for low-sodium diets or for people who simply prefer clean, simple food.
 

3. It’s Convenient for Busy Weeknights

Having jars of spaghetti squash on hand means dinner is never more than a few minutes away.
 
You can spaghetti squash once in the fall and enjoy it all winter without turning on the oven.
 
Just open a jar, drain, heat, and toss with your favorite sauce.
 

How Do You Can Spaghetti Squash Step by Step

The process of canning spaghetti squash is straightforward, but you must follow safe canning practices because squash is a low-acid vegetable.
 
That means you can’t just water-bath it; you need a pressure canner to reach the right temperature to kill bacteria.
 
Here’s how to can spaghetti squash the right way:
 

1. Choose and Prepare the Squash

Start with firm, mature spaghetti squash that feels heavy for its size.
 
Wash the outside thoroughly, then cut the squash in half lengthwise and scoop out the seeds.
 
Place the halves cut-side down on a baking sheet and roast at 375°F for about 45 minutes, until the flesh is tender but not mushy.
 

2. Scrape and Pack the Strands

Once the squash is cool enough to handle, use a fork to scrape out the flesh into strands.
 
Pack those strands loosely into clean, hot pint or quart jars, leaving about an inch of headspace.
 
Don’t press the squash down tightly, because you want the heat to penetrate evenly during processing.
 

3. Add Boiling Water and Salt

Fill each jar with boiling water, still leaving that one-inch headspace.
 
If you like, add a pinch of canning salt to each jar for flavor, but it’s completely optional.
 
Wipe the rims, place your lids and rings on, and get ready for the pressure canner.
 

4. Process in a Pressure Canner

Load your jars into the pressure canner according to the manufacturer’s instructions.
 
For pint jars, process at 11 pounds of pressure for 55 minutes; for quarts, process for 90 minutes.
 
Adjust for altitude if needed, and always let the pressure drop naturally before opening the canner.
 

Tips for Perfect Canned Spaghetti Squash

If you want the best results when you can spaghetti squash, keep these tips in mind.
 

1. Don’t Overcook Before Canning

Slightly undercooked squash holds up better in the jar, because it softens a bit more during processing.
 
If you roast it until it’s falling apart, you’ll end up with mushy strands.
 

2. Use Fresh Lids Every Time

Lids are not reusable for canning, so always grab a new box before you can spaghetti squash.
 
A good seal is what keeps your squash safe and shelf-stable for up to a year.
 

3. Store Jars in a Cool, Dark Place

Heat and light degrade quality fast, so keep your canned spaghetti squash in a pantry away from direct sun.
 
Properly stored, it will taste just as good in February as it did in October.
 

So, How Do You Can Spaghetti Squash?

You can spaghetti squash by roasting it, packing the strands into jars with boiling water, and processing it in a pressure canner for safety.
 
It’s a rewarding way to preserve a bumper crop and enjoy healthy, low-carb “pasta” all year long.
 
Once you learn how to can spaghetti squash, you’ll wonder why you didn’t start sooner.
 
So grab a few squash, fire up that pressure canner, and fill your pantry with jars of homemade goodness.