Spaghetti Squash in the Instant Pot (Fast & Easy!)

If you love spaghetti squash, but don’t love how long it takes to bake in the oven, you’ll love how much faster it cooks in the Instant Pot! It doesn’t get much easier than this.

how to cook spaghetti squash in the Instant Pot pressure cooker

You can cook spaghetti squash in the Instant Pot in just 7 minutes, plus the time it takes to come to pressure (which is usually an extra 10 minutes or so).

I feel like the Instant Pot isn’t always a time-saver, but in this case, it totally is. It normally takes me 45-60 minutes to bake a spaghetti squash in the oven!

Now, I’m sure you could probably bake the spaghetti squash whole if you wanted to, but I much prefer to slice it in half first, so that it cooks faster and so I can scrape the seeds out easily. When you try to scoop the seeds out AFTER the squash is cooked, I feel like you lose too much of the good, cooked squash in the process.

How to Cut Spaghetti Squash

I like to use a sharp knife to slice this hard squash in half lengthwise. Typically my knife gets “stuck” in the hard shell, so when that happens I’ll lift the squash by the knife handle and then hit it on the cutting board, so that the knife will continue the cut through the shell. Once you get most of the shell cut, the rest of the shell can be split in half by pulling the halves apart with your hands.

Tip: For longer “spaghetti” strands, cut the shell the other way, crosswise.

spaghetti squash cut in half with seeds scooped out

What Does Spaghetti Squash Taste Like?

Spaghetti squash is a relatively bland vegetable, so it’s mild flavor can go well with a number of seasonings and sauces. It’s more hydrating and not as starchy as other winter squashes, like butternut or acorn, and it’s also not as sweet in flavor. I prefer to pair it with savory seasonings, like in my Cheesy Spaghetti Squash Casserole or Spaghetti Squash Enchilada Boats.

When is Spaghetti Squash in Season?

Spaghetti squash is harvested in the Fall but it can last for months when stored in a cool place, so it’s usually available from Fall through Winter, and sometimes into early Spring.

How Long Can You Store Spaghetti Squash?

You can store the uncooked squash for months in a cool location. After you cook the squash, I’ve kept it stored in the fridge for up to a week with good results! I find it’s slightly more moist after storing it pre-cooked, but it can be a time-saver when making a casserole like the Spinach & Artichoke Casserole in No Excuses Detox, or the Cheesy Jalapeno Casserole in Everyday Detox.

using a fork to make spaghetti squash strands

Spaghetti squash can be a great side dish, or act as a pasta or shredded potato substitute. I hope you’ll enjoy it more often now with this fast cooking method!

Can you cook a whole spaghetti squash in the Instant Pot?

Yes! Simply pierce the spaghetti squash with a knife to vent, and then place it on the trivet with a cup of water in the pot. Cook on high pressure for 15 minutes for a 3-pound squash. (If your squash is larger, I’d add 3 more minutes to the cook time.) Allow the pressure to naturally release for 10 minutes before manually turning the pressure release valve to venting, then use heat-proof oven mitts to remove the squash. You may want to let the squash cool slightly before slicing it in half and removing the seeds with a spoon.

5 from 1 vote
Spaghetti Squash in the Instant Pot (Pressure Cooker)
Prep Time
5 mins
Cook Time
7 mins
Total Time
12 mins

Here's how to cook spaghetti squash FAST in the Instant Pot. It's faster than baking it in the oven, and turns out perfect every time!

Course: Side Dish
Servings: 4
Calories: 74 kcal
  • 1 spaghetti squash (about 3 pounds)
  • 1 cup water
  1. Slice the spaghetti squash in half and then scoop out the seeds in the center.

  2. Place a trivet or steamer basket in the bottom of the Instant Pot and add a cup of water into the bottom. Arrange the cut squash halves on top of the trivet and secure the lid. Make sure the vent at the top is turned to the "sealed" position.

  3. Use the manual button to set the pressure cooker to cook for 7 minutes on high pressure. When the timer goes off, carefully turn the vent at the top to quickly release the steam and lower the pressure.

  4. Carefully remove the lid, use a fork to check the squash to make sure it's cooked to your liking. I like my squash to be tender, but not mushy. If there is water collected in the center of your squash, drain it before serving.

  5. To serve the squash, use the tines of a fork to separate the cooked strands into spaghetti-like pieces and remove them from the hard shell.

  6. Use the cooked squash in your favorite recipe and store leftovers in an airtight container in the fridge for up to a week.

Per serving: Calories: 74, Protein: 1, Carbohydrates: 16, Fat: 1

Recipe Notes:

As always, if you have additional cooking tips to share, please leave them in the comments below so we can all benefit from your experience.

Reader Feedback: What’s your favorite way to serve spaghetti squash?

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If you have to wait 10 minutes to open the pot, that’s part of the cooking time. This takes 17 mi utes to cook.

    Megan Gilmore

    The 10 minutes is waiting for the water to come to a boil– not after the cooking process, but yes, it is roughly 17 total minutes, which is why I mentioned the extra 10 minutes for people who might need to plan the timing. MUCH faster than baking it for an hour!


What size Insta pot do you have?

Gloria Anna Janek

I just stumbled across your website and I’m in love! Can’t wait to make all of your vegan recipes!!!


This is how I do it too. Comes out perfect every time! I could never get it right in the oven. If your squash is a little bigger, you can add a couple more minutes to the time. Super easy. 🙂

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