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You are here: Home / Recipes by Category / Side Dishes/Vegetables / Instant Pot Caramelized Onions

Instant Pot Caramelized Onions

October 7, 2019

Last modified on August 31st, 2020

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White bowl with caramelized onions
White bowl with caramelized onions
White bowl with caramelized onions

How to make EASY Caramelized Onions in an Instant Pot.  Or in other words, how to turn a ho-hum dinner into fine dining in no time flat!  Forget sitting at the stovetop for an hour, this pressure cooker caramelized onion trick is so easy and rewarding!


White bowl with caramelized onions

Caramelized Onions.  What is it about this sweet, slightly funky, bundle of squiggly joy?

Basic simple ingredients that will elevate any meal and make it feel genuinely special.

Allow me to prove my point:

What would you pick?

  • Cheeseburger OR Gourmet Burger topped with Caramelized Onions and Swiss
  • Pepperoni Pizza OR Goat Cheese and Caramelized Onion Pizza
  • Grilled Cheese OR Gruyere and Caramelized Panini with a shmear of Fig Jam

The votes of my narrow-minded, boring children do not count here.

But seriously, add caramelized onions to any dish and watch people just go crazy town on you!

Because I want all of you to be minutes away from dazzling any crowd you might be feeding, it's time for an Instant Pot 101 lesson on:

HOW TO MAKE CARAMELIZED ONIONS IN THE INSTANT POT WITHOUT MAKING YOUR HOUSE SMELL LIKE A LOCKER ROOM FOR A WEEK

Do I get you or do I get you?

For my first attempt, I followed the technique at Serious Eats.  Unfortunately, with the 20 minute cook time, I was left with an onion puree.  A tasty puree, but totally not what I was going for.

But what I did learn from the Serious Eats article, is that the browning process of onions that gives it that sweet, golden flavor is called Maillard Browning.

It can be quite time-consuming to develop this type of browning which is why caramelizing onions is such a long, painstaking process.

The article goes on to tell how the high heat inside a pressure cooker will start to caramelize the sugars quickly without burning the onions.  The addition of baking soda raises the PH which also assists in speeding up the Maillard reaction.

Once this process is complete, you only need to saute the onions for a short time to complete the process.

You can refer to the article for all the details, but I found it fascinating and wondered if I could use the same technique and tweak it so I didn't end up with onion jam mush.

With a few more experiments, and an accidental finding that this method worked amazingly well for creating this French Onion Soup (I love silver linings), I finally nailed it.

french onion soup in a white bowl with cheese melted on top

HOW TO MAKE CARAMELIZED ONIONS IN A PRESSURE COOKER

  1. First, you want to slice your onions on the wider side of things.  This helps prevent the mush problem.
  2. Use the saute button on your Instant Pot to melt the butter.  Let it get bubbly and just start to brown.
  3. Then add your onions, baking soda, salt, and pepper.
  4. Cook just until the onions start to release their juices, about 4 minutes.
  5. Cook at high pressure for 5 minutes.  You'll end up with this beautiful pot of golden “soup”.
  6. Since we don't want soup right now though, pour off the extra liquid and reserve for another time.
  7. Use the saute function again to carmelize the onions a bit more as you evaporate the rest of the liquid.
  8. The color will deepen and the pan will get dry.
  9. In about 5 minutes, you'll have perfectly caramelized onions.

Step by step collage of how to make Instant Pot Caramelized Onions

SEE RECIPE CARD BELOW FOR DETAILED COOKING INSTRUCTIONS

Stovetop caramelized onions take an hour and a lot of babysitting!  Instant Pot takes about 30 minutes and less than 15 minutes of your attention.

Are you excited?  Cause I'm excited!

TIPS AND TRICKS FOR MAKING INSTANT POT CARAMELIZED ONIONS

  • Use sweet onions if you can find them.  I buy nothing else, I love them so much.
  • Cut them thick.  Cutting them thin will allow them to go soft before they've had a chance to develop the flavor we want.
  • It's not a typo, do not add any additional liquid to the pot for cooking.  The onions will create enough steam on their own to get the pot to pressure.
  • TAKE IT OUTSIDE!  I think I love the smell of cooking onions as much as the next person, but smelling it all week is another story.
  • Save that miraculous onion broth and use it for your next recipe that calls for chicken broth.  You will be amazed.
  • Don't be tempted to half the recipe.  Onions cook down a ton!

White bowl with caramelized onions

Not sure how to use your new pot of Caramelized Onions?  I got you.

RECIPES TO AMP UP WITH CARAMELIZED ONIONS

  • Instant Pot Egg Bites – chop them up and drop in the batter before you cook them
  • Stirred into Instant Pot Risotto!
  • Caramelized Onion Mac and Cheese . . . do it!
  • My absolute favorite salad of all time Balsamic Steak and Peach Salad
  • Ultimate topping for this Instant Pot Philly Cheesesteak or this French Dip

French dip sandwich on a plate with chips and horseradish sauce

Hit me with all your ideas in the comments below!  I'm dying to try them all.

HOW TO STORE YOUR CARAMELIZED ONIONS

They will store nicely in the fridge for 4 – 5 days.

For longer storage, divide into snack-size ziplock bags, then place those bags inside a freezer-safe bag and place in the freezer.

When you're ready to use them, place 1 small bag in a bowl of warm water and they'll be ready in just a few minutes.

Enjoy this trick!  It's a good one!

And might I add, if you choose to cook these outdoors, which I highly advise, plan on neighbors popping up in your yard unexpected.  The nose knows.  Better throw extra burgers on the grill.

TOOLS USED TO MAKE INSTANT POT CARAMELIZED ONIONS

  • Instant Pot
  • Cutco Knife (the best!)
  • My favorite Long Handle Spoons
Print

Instant Pot Caramelized Onions

White bowl with caramelized onions

★★★★★

4.7 from 7 reviews

Sweet, soft Caramelized Onions, done in a fraction of the time!  Perfect for topping sandwiches, pizzas, salads, and more.

  • Author: Marci
  • Prep Time: 5 minutes
  • Cook Time: 5 minutes
  • Total Time: 30 minutes
  • Yield: 2 cups 1x
  • Category: Side Dish
  • Method: Pressure Cooker
  • Cuisine: American
Scale

Ingredients

  • 4 pounds sweet or yellow onions, about 3 – 4 large onions
  • 2 tablespoons butter
  • 1/2 teaspoon baking soda
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper

Instructions

  1. Cut the root and top end off of an onion.  Slice the onion in half from top to bottom and remove the peel.  Lay flat side on the cutting board and slice the onion into about 3/4 inch wide moon shapes.  Repeat with remaining onions.
  2. Preheat the pressure cooker by selecting saute.
  3. When hot, add butter.  When butter is melted, bubbling, and starting to brown, add the onions, baking soda, salt, and pepper.
  4. Cook just until onions start to release their juices, 4 – 5 minutes.
  5. Secure the lid and turn pressure release knob to a sealed position.  Cook at high pressure for 5 minutes.
  6. When cooking is complete, use a quick release.
  7. Strain liquid into a separate bowl, leaving the onions in the pressure cooker pot.
  8. Select saute and gently stir the onions to allow excess liquid to evaporate and to let the onions brown a bit more, about 5 minutes.
  9. Use immediately on a salad, sandwich, pizza, etc or refrigerate for up to 5 days.
  10. To freeze, put 1/2 – 1 cup of onions in individual bags, press flat.  When you need caramelized onions to top your dinner, just pull out a single bag and let it thaw for an hour at room temperature or place it in a bowl of warm water for quicker thawing.

Notes

  • Use sweet or yellow onions for the best flavor
  • Cut onions into thick slices to prevent them from becoming too soft while cooking
  • I suggest cooking these outdoors.  It's quite a fragrant process

Keywords: Instant Pot, Easy Caramelized Onions, Quick Caramelized Onions

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Tags: butter, onion
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Reader Interactions

Comments

  1. Lori says

    January 9, 2021

    I’m glad to know that the original recipe gave you smushy onion mush because that’s exactly what I DO want as the base of a mughlai chicken recipe! Wanted to IP it so that I could do it outside and not stink up my house.

    Reply
    • Marci says

      January 10, 2021

      Lori, that sounds amazing! Share it with me if you don’t mind!

      Reply
  2. Karen says

    August 31, 2020

    Marci, I made it yesterday. The end result was excellent. I changed Pressure Cook time to 6 minutes and it worked well. For the 3 pounds of onion used, I needed to Saute 15 minutes (not 5 as stated in the recipe) to get rid of excess liquid. Your suggestion of saving the juice for future use was brilliant. I used it for making split pea soup which turned out great as well. This recipe really kills two birds with one stone ! Thanks again ….. Karen

    ★★★★★

    Reply
    • Marci says

      September 1, 2020

      Karen! I’m so excited to have my freezer stocked again! I’m so glad you liked it, I love being able to do it outside too 🙂

      Reply
  3. Sarah says

    August 15, 2020

    Good flavour but mine were so mushy even after following the directions exactly. I think 8 mins is too long maybe? I may try again and reduce the cooking time because it’s certainly easier than cooking on the stove.

    ★★★

    Reply
    • Marci says

      August 17, 2020

      Sarah, Mine still had a bite to it left so if yours were mushy, I would try 6 minutes.

      Reply
  4. Susan says

    July 3, 2020

    Yeah! This turned out great. I was thinking of adding balsamic and was happy to see someone else recommended it. Yum!

    ★★★★★

    Reply
    • Marci says

      July 4, 2020

      Susan, It’s one of my favorite IP tricks ever. I need to try the balsamic trick!

      Reply
  5. Sarah says

    May 11, 2020

    These turned out awesome. I put in a tiny splash of balsamic vinegar for flavor. Soooo good!!

    ★★★★★

    Reply
    • Marci says

      May 11, 2020

      Sarah, love that idea! Easiest caramelized onions ever, right!?

      Reply
  6. B says

    April 14, 2020

    These were great!! I made them to go along with a mujadara (lentils and rice) dish, trying to use up pantry staples in this quarantine. Thanks for the shortcut! And you’re right, that remaining liquid is AMAZING

    ★★★★★

    Reply
    • Marci says

      April 15, 2020

      Isn’t it a great short cut! What a delicious way to use them!

      Reply
  7. Kathy says

    October 20, 2019

    How about a recipe for caramelized onions using the Meathy Crisplid?

    Reply
  8. Carl says

    October 9, 2019

    Pierogies. My wife has made pierogies with carmelized onions made on the stovetop for pierogies for years. Boils the pierogies per package directions. We usually use Mrs. T s cheddar bacon minis but most are real good. Adds them to the carmelized onions, they are awesome, we get rave reviews. We’re experimenting with trying to make it all in the instant pot at the same time. If anyone has any ideas, let us know, we’ll do likewise

    ★★★★★

    Reply
    • Marci says

      October 10, 2019

      Carl, that is a fantastic idea. I will hunt those down and give it a go!

      Reply
  9. Carl says

    October 7, 2019

    Excellent with pierogies

    ★★★★★

    Reply
    • Marci says

      October 8, 2019

      Carl, I’ve yet to ever eat pierogies. You’ve inspired me 🙂

      Reply

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