Spaghetti squash is one of my all-time favorite kitchen chameleons, and making Instant Pot spaghetti squash is hands down the easiest way to enjoy it. It is hearty, healthy, and endlessly versatile, but what really makes it shine is the pressure cooker. You save a huge amount of time, you avoid heating up the whole kitchen with the oven, and you still get those perfect, tender, noodle-like strands that are just begging to be tangled up with your favorite sauce.
If quick, fuss-free vegetable magic is calling your name, you are in the right place. This method proves that healthy and delicious can absolutely go hand in hand, turning a whole squash into a low-carb pasta alternative in a fraction of the usual time. Whether you are meal prepping for the week or throwing together a fast weeknight dinner, this is a technique worth keeping in your back pocket.
Why You’ll Love This Recipe
The most obvious win here is time. Instead of an hour-long bake, the squash cooks in just minutes under pressure, which makes it realistic even on the busiest evenings. It is also wonderfully hands-off, so you can let the Instant Pot do its thing while you prep toppings, help with homework, or simply put your feet up for a moment.
Then there is the versatility. Spaghetti squash is the ultimate blank canvas, happy to be dressed with marinara, tossed with pesto, or drizzled with garlic butter. Whatever flavor mood you are in, it plays along beautifully, which is why it never gets boring no matter how often you make it.
Finally, it is healthy comfort food at its best. Naturally low-carb, gluten-free, and packed with nutrients, it lets you enjoy that satisfying pile-of-noodles feeling without any of the heaviness. It is the kind of dish you feel genuinely good about serving to your whole family.
Ingredients
This recipe is proof that you do not need a long shopping list to make something wonderful. All you truly need is 1 medium spaghetti squash, about 2 to 3 pounds, and 1 cup of water. That is the entire essential list, which is part of what makes this such a reliable go-to.
When choosing your squash, look for one that is firm, unblemished, and feels heavy for its size, which is a good sign it is ripe and full of moisture. A squash in the 2 to 3 pound range is perfect for a family dinner, giving you enough strands to serve as a main or a generous side. If you are only cooking for one or two, a smaller squash works just as well.
The 1 cup of water is essential, since it creates the steam that pressure cooks the squash through. For a subtle savory boost, you can swap the water for broth, and if you want a little extra flavor built right in, brush the cut squash with olive oil and sprinkle it with salt, pepper, or garlic powder before cooking.
Step-by-Step Instructions
Begin by prepping the squash. Cut the spaghetti squash in half lengthwise for shorter strands, or widthwise if you prefer longer, more noodle-like ribbons. Use a spoon to scoop out the seeds and stringy pulp from the center. Do not worry if the cutting feels a little tricky, since not every squash slices smoothly, and a sturdy knife with a rocking motion helps.
Next, pour 1 cup of water into the bottom of the Instant Pot and set the metal trivet inside. The trivet keeps the squash lifted above the water so it steams rather than boils, which is key to those perfect strands.
Position the squash halves cut-side up on the trivet. If only one half fits comfortably, simply cook in two batches rather than forcing them in, since crowding leads to uneven cooking. Then secure the lid, move the valve to Sealing, and set the Instant Pot to Manual or High Pressure for 7 minutes. For softer, more tender strands, increase the time to 8 or 9 minutes.
When the cooking time is up, perform a quick release by carefully moving the valve to Venting. Steam will escape rapidly, so use a towel or a long utensil to protect your hand and keep it clear of the steam. Once the pressure has fully released and the pin drops, it is safe to open the lid.
Finally, use tongs to carefully remove the squash, since it will be very hot. Run a fork lengthwise through the flesh to scrape out the strands, fluffing them into that signature noodle-like texture as you go. With about 5 minutes of prep and just 7 minutes of cook time, plus the time to come to pressure, you have a finished squash in roughly 12 minutes of active time, yielding 2 to 4 servings.
Tips for the Best Instant Pot Spaghetti Squash
If you are short on time on a busy night, prep the squash the night before by cutting and seeding it, then storing it in the fridge so you can drop it straight into the pot when you are ready. For more flavor, brush the cut sides with olive oil and season with salt, pepper, or garlic powder before cooking, which lets the seasoning meld into the strands as they steam. And if you happen to overcook it, do not fret, since slightly softer squash is delicious mashed or stirred into a creamy soup.
Spaghetti squash truly shines when you dress it up. For pasta night, toss it with marinara, fresh basil, and a sprinkle of Parmesan. For a more luxurious take, drizzle it with garlic butter and top with sautéed shrimp. If you love the ease of hands-off Instant Pot meals, you will also enjoy my cozy one pot Instant Pot lentil soup, and for a creamy comfort-food night, my Instant Pot chicken Alfredo pasta is always a favorite.
Because the strands reheat so well, this is a fantastic meal-prep component. Cook a squash or two at the start of the week and you will have a ready-to-go base for quick lunches and dinners, needing only a fresh sauce or a handful of toppings to feel brand new each time.
Kitchen Gear for This Recipe
- Instant Pot Duo 6-Quart
- Tempered Glass Instant Pot Lid
- Steamer Basket & Trivet Set
- Instant-Read Meat Thermometer
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Frequently Asked Questions
Can I freeze cooked spaghetti squash?
Absolutely. Let the strands cool completely, then store them in an airtight container or freezer bag for up to 3 months. Thaw overnight in the fridge and reheat gently before serving.
How long will it keep in the fridge?
Cooked spaghetti squash keeps well in the fridge for 4 to 5 days in an airtight container, which makes it perfect for meal prep and quick weeknight assembly.
Do I need to peel the squash?
Nope. The peel acts like a built-in bowl, so you simply scoop out the strands with a fork and discard the skin when you are done.
How do I get longer strands?
Cut the squash widthwise into rings rather than lengthwise. The strands run around the circumference of the squash, so cutting across them yields longer, more dramatic noodle-like ribbons.
Can I use broth instead of water?
Yes. Swapping in vegetable or chicken broth for the 1 cup of steaming liquid gives the squash a subtle savory boost. It is an easy way to layer in a little extra flavor with no added effort.
If this healthy staple has you craving more wholesome inspiration, take a look at these healthy eating ideas from our sister site. And if you make this spaghetti squash, I would love to see how you top it, so snap a photo and tag @thekitchensaid on Instagram.
Easy Instant Pot Spaghetti Squash
American · Side Dish
Perfect Instant Pot spaghetti squash with tender, noodle-like strands in just 7 minutes of cook time, ready for any sauce.
Ingredients
- 1 medium spaghetti squash (2-3 lbs)
- 1 cup water
- Optional: olive oil, salt, pepper, garlic powder
Instructions
- Cut the spaghetti squash in half and scoop out the seeds and stringy pulp.
- Pour 1 cup water into the Instant Pot and set the metal trivet inside.
- Place the squash halves cut-side up on the trivet, cooking in batches if needed.
- Seal and cook on High Pressure for 7 minutes (8 to 9 for softer strands), then quick release the pressure.
- Remove the squash carefully and use a fork to scrape out and fluff the strands. Serve immediately.
Nutrition: 90 calories
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