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    Home » Recipes » Pressure cooker

    Pressure Cooker Mashed Acorn Squash

    Published: Nov 14, 2013 · Modified: Feb 28, 2017 by Mike Vrobel · This post may contain affiliate links · 14 Comments

    Jump to Recipe
    Pressure Cooker Mashed Acorn Squash
    Pressure Cooker Mashed Acorn Squash

    Thanks to everyone who answered my call for help with winter squash. There are some great recipes in the comments - go check them out.

    After my whining about “It’s sooo hard to peel winter squash”, there was a recurring theme in the comments. Why bother to peel it? Halve it, seed it, cook it with the skin on, and then scrape out the flesh. No wrestling with the hard skin, other than cutting it in half. (Which is difficult enough - I had to put my weight into it to force my chef’s knife through, and I’m not a small guy. I can see why some people recommend using cleavers and/or mallets to split them. Please be careful!)

    Once again, I borrowed the pressure roasting technique from Modernist Cuisine at Home. Combining an alkaline environment with the high heat of the pressure cooker results in even caramelization of the squash. How do we get an alkaline environment? We sprinkle the squash with a little baking soda. The squash roasts as it pressure cooks, and is beautifully caramelized in 20 minutes.
    *No pressure cooker? No worries. See the Notes section for oven baked squash instructions.

    Then I mix in the good stuff - butter, brown sugar, and nutmeg. My mother-in-law suggested cinnamon, which sounded like a great idea...but I forgot when I was mashing. If you want to try it, add a quarter teaspoon, taste, and add more from there. I don't think it needs cinnamon, but I don't want to disappoint mom.

    Recipe: Pressure Cooker Mashed Acorn Squash

    Adapted From: Pressure Cooker Squash, Nathan Myhrvold and Maxime Bilet, Modernist Cuisine at Home

    Equipment:

    • 6 quart or larger pressure cooker (I used my electric Instant Pot PC)

     

    Print
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    Pressure Cooker Mashed Acorn Squash


    ★★★★★

    4.5 from 2 reviews

    • Author: Mike Vrobel
    • Total Time: 25 minutes
    • Yield: 4-6 1x
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    Description

    Pressure Cooker Mashed Acorn Squash recipe - pressure-roasted squash, mashed with butter, brown sugar, and nutmeg.


    Ingredients

    Scale
    • 2 acorn squash, stem trimmed, halved, and seeded
    • 1 teaspoon kosher salt
    • ¼ teaspoon baking soda
    • ½ cup water

    Mix in

    • 2 tablespoons butter
    • 2 tablespoons brown sugar
    • ½ teaspoon grated nutmeg
    • Salt and pepper to taste

    Instructions

    1. Pressure cook the squash Sprinkle the cut side of the squash with the kosher salt and the baking soda. Put a steaming basket or cooking rack in the pot, pour in ½ cup of water, then stack the squash on top. Lock the lid and bring the pressure cooker up to to high pressure. Lower the heat to maintain high pressure and pressure cook for 20 minutes at high pressure (24 minutes in an electric pressure cooker). Quick release the pressure. Remove the squash from the cooker, and let cool.
    2. Mash the squash When the squash is cool enough to handle, scrape the flesh from the squash into a medium bowl. Add the butter, brown sugar, and nutmeg. Mash with a potato masher until the butter is melted and the squash is smooth. Taste the mashed squash, and add salt and pepper as necessary.
    • Prep Time: 5 minutes
    • Cook Time: 20 minutes
    • Category: Pressure Cooker
    • Cuisine: American

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    Tag @DadCooksDinner on Instagram and hashtag it #DadCooksDinner

     

    Acorn squash
    Acorn squash
    Squash in the cooker - just barely fit
    Squash in the cooker - just barely fit
    Done pressure cooking
    Done pressure cooking
    Scoop out the squash
    Scoop out the squash
    Mash away!
    Mash away!

    Notes

    • No pressure cooker? Cook the squash in the oven. Split the squash, seed them, and salt them. Skip the baking soda - there’s no need for it in the oven. Put the squash in a baking dish, add ½ cup of water to the dish, and roast the squash in a 400°F oven. The squash are done when they are browned and easily pierced with a paring knife, about 45 minutes. Continue with step 2: Mash the squash.
    • Seriously, watch out when you’re splitting the acorn squash. I don’t want anyone losing a finger over one of my recipes. Alton Brown suggests cutting into the squash with a cheap Asian cleaver, then tapping it through with a mallet. Cooks Illustrated recommends a bench scraper and a mallet. Me? I stuck my 8 inch chef’s knife in there, held the point on the cutting board, and leaned into it, rocking back and forth, until it split. I’m probably going to be the one to lose a finger…so, I’d go with the AB or CI approach if I were you.
    • Cooking for a crowd? You want three (or more) squash, and an 8 quart pressure cooker (or larger.) Don't worry about the pressure cooker's max fill line - just don't pile the squash above the top of the pot. There's enough airspace around the squash to come up to pressure, even if you're above the max fill line.

    What do you think?

    Questions? Other ideas? Leave them in the comments section below.

    Related Posts:

    Pressure Cooker Roasted Sweet Potato Puree
    What do I do with: The Winter Squash issue
    Click here for my other pressure cooker recipes

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    Comments

    1. Meagan says

      November 26, 2017 at 6:31 pm

      This turned out great! I needed mashed sweet potatoes for a dessert shepherd's pie recipe for thanksgiving and the night before, I learned my sweet potatoes had gone bad. I wasn't about to go to the store but had 2 acorn squash on hand and followed your instructions for mashed acorn squash instead. Added a little extra brown sugar since it was for a dessert. I actually enjoyed it more than the original pie recipe so I might stick with this next time or alternate between this and sweet potato!

      Also, my trick for easily cutting acorn squash is to chill it in the refrigerator then bring it back to room temperature. Softens it up just enough! I know you shouldn't store squash in the fridge but if you plan ahead, you can get it from the counter to the fridge and back to room temp once you are ready to cut it.

      ★★★★★

      Reply
    2. Susan says

      December 01, 2016 at 11:59 am

      What is the purpose of the baking soda in the recipe?

      Reply
      • Mike V says

        December 01, 2016 at 1:31 pm

        From the head notes: Once again, I borrowed the pressure roasting technique from Modernist Cuisine at Home. Combining an alkaline environment with the high heat of the pressure cooker results in even caramelization of the squash. How do we get an alkaline environment? We sprinkle the squash with a little baking soda. The squash roasts as it pressure cooks, and is beautifully caramelized in 20 minutes.

        Reply
    3. Lynn says

      October 23, 2016 at 1:38 pm

      I love this way of cooking my acorn squash! It tastes just like I cooked it in the oven for hours. The only change I made was I just put the acorn squash in the instant pot naked, nothing on the inside or outside. When it is done I just scoop out the squash put it in a bowl add some butter and pure maple syrup. That is it! So YUMMY 🙂

      Reply
    4. Alicia says

      January 31, 2016 at 3:02 pm

      Thanks for this. It was delicious. Just one problem: 1/2 cup of water caused my pressure cooker to scorch even though I had turned down the heat. Why so little water? I plan to use 1 cup at least next time.

      ★★★★

      Reply
    5. emme says

      January 08, 2016 at 2:40 pm

      What is the purpose of the baking soda?

      Reply
      • Mike V says

        January 08, 2016 at 3:14 pm

        Read the recipe header to find out. 🙂

        Reply
    6. Moriaelini says

      December 09, 2015 at 6:09 pm

      Mine did not look like yours when I took the lid off my Instant Pot, heh. My squash had king of exploded a bit. I think next time I might reduce the cooking time from 24 to 20 minutes.

      Reply
    7. Karen says

      October 22, 2015 at 6:21 pm

      Yeah, this was a little too long for me, too - I was also picking little pieces of the very soft peel out of the dish. I'm just glad I didn't add the extra time for my high altitude! But it WAS very easy to mash, and it's very tasty!

      Curious - what's the reason for the baking soda?

      Reply
      • Mike V says

        October 22, 2015 at 7:33 pm

        Read the headnotes for an explanation about the baking soda - all is explained there.

        Reply
        • Karen says

          October 22, 2015 at 7:57 pm

          Got it - thanks!

          Reply
    8. Cindy says

      September 29, 2015 at 5:55 pm

      A very easy and safe way to cut the acorn squash is to put two whole acorn squash in the microwave on high for 5 or 6 minutes. Just remember to jab a bunch of holes into each one with the tip of a sharp knife first. They cut like butter.

      Reply
    9. julie says

      February 17, 2015 at 9:37 pm

      Are you serious about the 20 minutes cooking time??? I tried it with my Instant pot, for 20 minutes and ended up with a sloppy mess. I was concerned that it would be too much, therefore I didn't allow it to naturally release. The squash was so over cooked, (still edible) but I had pick out tons of skin as it was falling apart. I am currently trying another set, as I couldn't fit the 4 large squash in my IP. This time I cut them into 1/8ths and set it for 12 minutes. I will let you know how it goes.

      Reply
      • Mike V says

        February 18, 2015 at 5:59 am

        No, I'm not kidding about 24 minutes for my instant pot, with a quick pressure release. Yes, the squash are close to falling apart; that's what I want for mashed squash.

        Reply

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