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You can steam squash in an Instant Pot easily by using the steamer basket and just a cup of water.
It’s one of the fastest and simplest ways to get tender, sweet squash on the table without babysitting a pot on the stove.
If you’ve been wondering how to steam squash in an Instant Pot without turning it into mush, you’re in the right place.
In this post, we’ll walk through how to steam squash in an Instant Pot step by step, plus the best cook times for different squash varieties.
Let’s get to it.
How to Steam Squash in an Instant Pot
Steaming squash in an Instant Pot is quick, and here’s exactly how to do it:
1. Prep Your Squash
Wash your squash well, then cut it into uniform chunks so everything cooks evenly.
For butternut or acorn squash, scoop out the seeds and peel if you prefer.
For delicate squash or zucchini, you can leave the skin on since it steams beautifully.
The key when you steam squash in an Instant Pot is keeping pieces similar in size, ideally about one to two inches thick.
2. Add Water to the Instant Pot
Pour one cup of water into the inner pot of your Instant Pot.
That’s all the liquid you need since the steam does the cooking, not the water itself.
If you want a little extra flavor when you steam squash in an Instant Pot, add a splash of broth instead of plain water.
3. Use a Steamer Basket or Trivet
Place a steamer basket or the trivet that came with your Instant Pot into the pot.
The basket keeps the squash above the water so it steams rather than boils.
Arrange your squash pieces in the basket in a single layer if possible, though stacking works fine too as long as steam can circulate.
4. Lock the Lid and Set the Time
Secure the lid and set the valve to sealing.
Press the Manual or Pressure Cook button and set the timer based on your squash type.
For cubed butternut or acorn squash, three to four minutes works well.
For whole small squash or larger chunks, five to seven minutes is better.
If you’re steaming spaghetti squash halves, give them about seven minutes.
5. Do a Quick Release
Once the cooking time finishes, carefully turn the valve to venting for a quick pressure release.
This stops the cooking fast so your squash doesn’t get overly soft when you steam squash in an Instant Pot.
Open the lid once the pin drops, and check doneness with a fork.
The fork should slide in easily with just a little resistance.
Why Steam Squash in an Instant Pot?
Steaming squash in an Instant Pot beats the stove and oven for a few good reasons:
1. It’s Speedy
What takes forty minutes in the oven takes under ten minutes in an Instant Pot.
That speed is a game changer on busy weeknights when you still want something fresh and healthy.
2. It’s Hands-Off
Once you lock the lid, you can walk away and do other things.
No stirring, no checking, no hovering over a steaming pot of water.
3. It Preserves Nutrients
Steaming keeps more vitamins and minerals intact compared to boiling, where nutrients leach into the water.
When you steam squash in an Instant Pot, the squash sits above the water so it holds onto its goodness.
4. It Keeps Squash From Getting Watery
Boiled squash soaks up water and turns soggy.
Steaming avoids that entirely, giving you a firmer, sweeter texture every time.
Best Squash Varieties to Steam in an Instant Pot
Not all squash cook the same, so here’s a quick guide:
1. Butternut Squash
Cubed butternut squash steams in about three to four minutes once cubed.
It comes out tender, sweet, and perfect for soups, mash, or tossing into salads.
2. Acorn Squash
Cut acorn squash into wedges or halves and steam for five to six minutes.
The flesh turns creamy and scoopable, great with a little butter and brown sugar.
3. Spaghetti Squash
Halve it, scoop the seeds, and steam for about seven minutes.
Once cool enough to handle, rake a fork through the flesh and watch the spaghetti-like strands appear.
4. Zucchini and Summer Squash
These steam fast, so keep the time to one to two minutes.
Overcooking turns them to mush, so stay close to the pot when you steam squash in an Instant Pot that’s on the tender side.
5. Delicate Squash
Halve it, remove the seeds, and steam for about six minutes.
Its nutty, slightly sweet flavor shines when steamed simply.
Tips for Perfect Steamed Squash in an Instant Pot
A few small tweaks make a big difference:
1. Don’t Skip the Quick Release
Letting the pressure release naturally keeps cooking the squash, so use the quick release to avoid mush.
2. Season After Steaming
Add salt, pepper, butter, or herbs once the squash is out of the pot.
Seasoning before steaming can draw out moisture and change the texture.
3. Cut Pieces Evenly
Uneven chunks mean some pieces turn to mush while others stay hard.
Aim for consistent sizes every time you steam squash in an Instant Pot.
4. Don’t Overfill the Basket
Leave a little room so steam can move around the squash.
A crowded basket leads to uneven cooking.
So, How Do You Steam Squash in an Instant Pot?
You steam squash in an Instant Pot by adding a cup of water, placing squash in a steamer basket, and pressure cooking for three to seven minutes depending on the variety.
It’s fast, hands-off, and keeps the squash tender and full of flavor.
Once you try it, you may never go back to oven roasting on a busy night.
Hope this post has helped you learn how to steam squash in an Instant Pot with confidence and ease.