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You can cook spaghetti squash in an Instant Pot in about 7 minutes at high pressure, followed by a quick pressure release.
That’s right—what used to take nearly an hour in the oven now takes less time than waiting for your coffee to brew.
If you’ve ever struggled to slice through a rock-hard spaghetti squash or waited impatiently for it to roast, the Instant Pot is about to become your new best friend.
In this post, we’ll walk through exactly how long to cook spaghetti squash in Instant Pot, how to prep it, and a few tips to get perfect strands every single time.
How Long Do You Cook Spaghetti Squash in Instant Pot?
When you cook spaghetti squash in Instant Pot, the timing depends on the size of your squash and whether you cut it or cook it whole.
For a medium squash (around 2 to 3 pounds) cut in half, you’ll need 7 minutes on high pressure with a quick release.
If you’re cooking a whole spaghetti squash in the Instant Pot, add a couple more minutes—about 10 to 12 minutes on high pressure.
Larger squash, say 4 pounds or more, may need 10 to 15 minutes when cut in half.
The beauty of cooking spaghetti squash in an Instant Pot is that it’s fast, hands-off, and you don’t have to wrestle with a sharp knife as much as you would for oven roasting.
1. Why the Instant Pot Is Perfect for Spaghetti Squash
The Instant Pot cooks spaghetti squash using steam and pressure, which means the flesh softens evenly without drying out.
Unlike roasting, which can sometimes leave the edges crispy and the center underdone, pressure cooking gives you consistent results.
Plus, you can cook spaghetti squash in Instant Pot while you’re prepping the rest of dinner.
It’s a set-it-and-forget-it situation that busy weeknights desperately need.
2. How to Prep Spaghetti Squash for the Instant Pot
First, wash the outside of your squash to remove any dirt.
Then, using a sharp chef’s knife, cut the squash in half lengthwise.
Scoop out the seeds and stringy bits with a spoon—just like you would with a pumpkin.
If the squash is too hard to cut, you can microwave it for 2 to 3 minutes to soften the skin slightly.
Once halved and seeded, place the squash halves on a trivet inside your Instant Pot.
Add one cup of water to the bottom of the pot.
That water creates the steam needed to cook spaghetti squash perfectly.
3. Step-by-Step: Cooking Spaghetti Squash in Instant Pot
Place the trivet with the squash halves on top, cut side up or down—either works.
Secure the lid and set the valve to sealing.
Press the manual or pressure cook button and set the timer to 7 minutes for a medium squash.
Once the cooking time is up, do a quick pressure release.
Carefully open the lid and use tongs to remove the squash.
Let it cool for a few minutes, then use a fork to scrape the flesh into spaghetti-like strands.
And that’s it—you’ve successfully cooked spaghetti squash in Instant Pot.
4. How Long for Different Sizes and Preferences
If you like your spaghetti squash a bit firmer, reduce the time to 5 or 6 minutes.
For a softer, more tender texture, go with 8 to 9 minutes.
Remember, when you cook spaghetti squash in Instant Pot, the size of the squash matters more than you might think.
A small squash (under 2 pounds) might only need 5 minutes.
A large one (over 4 pounds) could take 12 to 15 minutes.
When in doubt, start with 7 minutes and adjust next time based on your results.
Tips for Perfect Instant Pot Spaghetti Squash
Don’t skip the water—it’s essential for building pressure and steaming the squash.
Always use a trivet so the squash doesn’t sit directly on the bottom of the pot.
If you’re cooking two small squash at once, stack them carefully or use a taller trivet.
Season after cooking, not before, because salt can draw out moisture and make the squash watery.
And always do a quick release to stop the cooking process immediately.
That’s how you cook spaghetti squash in Instant Pot without it turning to mush.
1. Common Mistakes to Avoid
Overcooking is the biggest mistake when you cook spaghetti squash in Instant Pot.
If you go past 10 minutes for a medium squash, the strands can turn soft and mushy.
Another mistake is forgetting the water—without it, your Instant Pot won’t come to pressure.
And don’t try to cook a whole, uncut squash without piercing it first, as it can burst.
Stick to the times above, and you’ll never have to wonder how long do you cook spaghetti squash in Instant Pot again.
2. What to Do with Your Cooked Spaghetti Squash
Once you’ve cooked spaghetti squash in Instant Pot, you can toss the strands with marinara, pesto, or a simple garlic butter sauce.
Use it as a low-carb swap for pasta in casseroles or stir-fries.
You can also meal prep by storing the cooked strands in the fridge for up to five days.
Freezing works too—just squeeze out excess water before freezing.
The possibilities are endless once you master how long to cook spaghetti squash in Instant Pot.
So, How Long Do You Cook Spaghetti Squash in Instant Pot?
You cook spaghetti squash in Instant Pot for about 7 minutes on high pressure for a medium-sized squash cut in half.
Larger squash need 10 to 15 minutes, while smaller ones may only take 5 minutes.
The Instant Pot method is faster, easier, and more consistent than oven roasting.
Just remember to add water, use a trivet, and do a quick release.
Now that you know how long to cook spaghetti squash in Instant Pot, you can enjoy perfectly tender, spaghetti-like strands any night of the week.