Instant Pot French Onion Soup

Instant Pot French Onion Soup is a restaurant-quality soup, with a savory flavor and sweet taste. It is loaded with caramelized onions, beef broth, and topped with gooey cheese, for the perfect finish!

We love making Instant Pot recipes because of their convenience, usually, they are done in a fraction of the time it would regularly take. Like the delicious Taco Soup and this hearty Pork Stew, this easy recipe will quickly become your go-to soup that the whole family loves.

spoonful of french onion soup topped with cheese

Onion Soup Recipe

Electric Pressure Cooker French Onion Soup recipe is absolutely delicious. Topped with a toasted french baguette and lots of melty cheese this is the best french onion soup you will have. 

We absolutely love this recipe as it can make a great appetizer or main dish. Made with simple ingredients with and with the help of the instant pot you can enjoy a French meal from the comfort of your own kitchen.

Unlike many other soups done in the pressure cooker, this one requires some extra time and attention in caramelizing the onions.

After making this delicious recipe multiple times, we have come to the conclusion that for a perfect version of it, you will basically need to follow two important steps.

Step 1: Caramelizing the onions

This step takes some additional time to do in the Instant Pot. On average, it takes about 15-20 minutes to fully caramelize the onions. Hence, make sure to set time aside for the caramelizing part. Caramelizing is a process that occurs when sugar is added to the onions, and when they become brownish in color.

Step 2: Using high-quality beef broth

Since broth is the main ingredient here, make sure to use organic and high-quality broth. Your soup will only be as good as the stock you are using. The traditional French Onion Soup is made with beef broth, and this is what we have used here. So if you use boxed beef broth, taste it first!

Bowl of Instant Pot french onion soup topped with melted cheese and a slice of bread

Ingredients Needed:

  • Onions: Use sweet onions, red onions, large yellow onions, or Vidalia onion.
  • Butter: Use high-quality unsalted butter.
  • Brown sugar: For that caramel color and sweet flavor.
  • Aromatics: For a savory deep flavor we use garlic and fresh thyme.
  • Worcestershire sauce
  • Broth: Use beef broth or beef stock.
  • Wine: Red wine for a more robust flavor, or white wine for a lighter version of classic French onion soup.
  • Seasonings: Salt and freshly ground black pepper.
  • Bread: Toasted French baguette slices, or homemade croutons. For a milder flavor use homemade chicken stock and vegetable broth for a vegetarian version of this comforting soup.
  • Cheese: We like to use melty Gruyere cheese, Swiss cheese.

How to make the perfect Instant Pot French Onion Soup:

Watch the recipe video tutorial attached. But the general steps are as follows:

  1. Sauté function: First, select saute on your instant pot pressure cooker. When hot, add the butter to the bottom of the pot and melt it. Next, add sliced onions, and brown sugar, and sauté for about 15-20 minutes or until onions are golden brown and caramelized.
  2. Add liquid: Next, add garlic, red wine, Worcestershire sauce, and the seasonings. Stir for 1-2 minutes. Then, add the beef broth.
  3. Pressure cook: Finally, cover with the lid and seal the pressure cooker. Set to cook on high pressure for 20 minutes.
  4. Natural Pressure Release: After the time is done, do a natural release for 15 minutes.
  5. Quick pressure release: Then quick release the remaining pressure by opening the vent. Stir the delicious soup and add it to oven-safe bowls.
  6. Crusty bread: First, add the bowls of soup onto a baking sheet or baking tray. Next, slice a loaf of french bread and arrange the pieces on top of the soup.
  7. Cheese: Afterward, top the serving bowl with plenty of cheese.
  8. Oven broiler: Finally, place in the oven for a few minutes to broil. Broil until cheese is melted, and has a golden brown color.
  9. Serve: This delicious homemade soup is best served right away. Add some cheese on top, and use a fresh baguette for dipping.

Pressure cooker french onion soup

Recipe Variations:

  • Broth: The base of this soup is a high-quality broth. For a deeper flavor, you can even use Bone Beef Broth. Alternatively, you can substitute the beef broth with chicken or veggie broth.
  • Vegetarian soup: For a vegetarian version, use vegetable stock.
  • Cheese: Top the soup with your favorite cheeses. We have used Gruyère cheese, but a combination of provolone, Swiss, aged Beemster, or Parmesan will work just as well. As an option, to make it fancier top it with black truffle cheese and serve it with shaved black truffles.
  • Herbs: To make this flavorful soup even better, add some fresh chopped rosemary and oregano to it. Bay leaves are a great addition as well.
  • Beef: While not part of the classic soup, you can saute and add some beef ribs to it.
  • Slow Cooker version: After caramelizing the onions, add all the ingredients to the crockpot and cook on low for 8 hours or on high for 4-5.

Bowl of freshly cooked instant pot french onion soup

How to store leftovers:

  • Refrigerate: First, let the leftover fully cool, after that the Instant Pot French Onion Soup can be stored in an airtight container in the fridge for up to 5 days.
  • Freeze: As well let the leftovers cool first, next add them to a freezer bag, and lay them flat in the freezer. Freeze for 3 months.
  • Thaw: Either thaw the bag in the fridge overnight or place it in a large casserole under warm running water.
  • Reheat: Reheat the soup in a pot on the stove top, and pour the soup into ceramic bowls. To create the cheesy bread topping, arrange baguette slices on top of each bowl, and top with some shredded or sliced cheese. Then, place the soup bowls under the broiler for a few minutes until the cheese is bubbly and golden brown.

More Instant Pot Soups:

Cooking Tips:

  • First, one of the most important aspects of this restaurant-quality soup is to take the time to caramelize the onions. They need to be a deep caramel color as they release lots of flavors.
  • Make sure to taste and adjust for seasoning, also use more herbs for a richer and more complex taste.
  • Be careful when doing a quick release as the liquid may burst out.
  • Also, make sure to use a delicious broth!

Instant Pot French Onion Soup

Ultimate Instant Pot French Onion Soup

Catalina Castravet
Instant Pot French Onion Soup is a restaurant-quality soup, easily and comfortingly made at home. It is loaded with caramelized onions, beef broth, and topped with Gruyere cheese, for the perfect finish!
4.91 from 22 votes
Prep Time 30 minutes
Cook Time 35 minutes
Total Time 1 hour 5 minutes
Course Main Course
Cuisine French
Servings 6 servings
Calories 326 kcal

Ingredients
 
 

  • 5 medium size onions peeled and thinly sliced
  • 4 tablespoons unsalted butter
  • 2 tablespoons brown sugar
  • 5 cloves garlic minced
  • 1 teaspoon dry thyme optional
  • 1 tablespoon Worcestershire sauce
  • 1 cup red wine or beef broth
  • 8 cups beef broth
  • 1/4 tsp salt and pepper or to taste

For serving:

  • 6 baguette slices
  • 2 cups Gruyere cheese grated

Instructions
 

  • Turn on the Instant Pot and Select Sauté mode on High. Once it reads HOT, add the butter, and stir with a wooden spoon, melt it.
  • Add sliced onions and brown sugar to the Instant Pot. Sauté for about 15-20 minutes or until onions are golden brown and caramelized. Stir occasionally.
  • Next, add minced garlic, thyme, red wine, Worcestershire sauce, and salt and pepper to taste. Stir for 1-2 minutes.
  • Then, add the beef broth. Make sure you do not go over the MAX line of the inner pot.
  • Seal pressure cooker lid and cook on high pressure for 20 minutes. This is followed by a 15 minutes Natural Pressure Release.
  • After the time is done, release the remaining pressure by allowing steam to vent, then remove the lid. Stir the soup.

Serving:

  • Turn on the oven broiler.
  • Before serving, top each serving bowl with a slice or two of French baguette and some sliced or shredded Gruyere cheese.
  • Place the bowl on a baking sheet and transfer it into the oven for few minutes to broil. Broil until cheese is melted, bubbly, and has a golden brown color.

Nutrition

Calories: 326kcalCarbohydrates: 6gProtein: 17gFat: 22gSaturated Fat: 13gCholesterol: 68mgSodium: 1532mgPotassium: 291mgFiber: 0gSugar: 4gVitamin A: 650IUVitamin C: 1.4mgCalcium: 480mgIron: 1mg
Tried this recipe?Let us know how it was!

Video

photo collage of Instant Pot French Onion Soup

4.91 from 22 votes

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55 Comments

  1. Usually making homemade French onion soup is an all day thing! I love how quickly you can make this in the instant pot. 🙂

  2. I’ve had instant pot French onion soup on my must make a list for a while, I cannot wait to try your recipe, it looks amazing!5 stars

  3. Really tasty! I had to saute low to caramelize, it was burning too quick for me even though I was standing right there. I personally would add more onions for the second cook, the ratio of broth to onion “strings” was off for me. Delicious recipe, but all your recipes are delicious.5 stars

  4. The soup is amazing the only thing we find is that the onions taste sweet in the soup.
    Is there anything we can do to make it more savory now that has been cooked.5 stars

    1. Skip the brown sugar if you don’t like the sweetness, and next time use regular yellow onions, not sweet. Also, you can add a bit more Worcestershire sauce.

  5. Any danger to cooking with wine in the IP? I see many warnings not to use alcohol even in a stovetop pressure cooker. Also, I assume that the alcohol does not cook off like it would in a traditional recipe, so  this recipe would not be particularly safe for children, correct?

    1. The alcohol doesn’t fully evaporate as it does on the stove or in the slow cooker. If you want to serve this to kids, all you have to do, after Pressure Cooking, open the IP, click on Saute and simmer the soup for 5-10 minutes, to make sure the alcohol evaporates.

    2. I would also imagine that a cup of wine cooked for 2 minutes and then diluted into 64 ounces of broth would be pretty low in alcohol conent.

  6. I would also imagine that a cup of wine cooked for 2 minutes and then diluted into 64 ounces of broth would be pretty low in alcohol conent.

  7. Delicious soup! My broiler isn’t working so I just cut the slices of Provolone cheese in small strips and place it on top of the soup. The cheese quickly melted into stretchy strings of yumminess and topped it off with a slice of French bread.
    By the way, I didn’t use salt; the broth and cheese have  plenty of sodium. I also replaced the wine by broth.5 stars

  8. Can you can this soup? Without the cheese until you reheat for serving. I somehow ended up with a bunch of onions and would love to make for winter

  9. We enjoyed this soup for dinner. Liked the fact that I didn’t have to smell the onions for quite as long. I needed to add salt and I rarely do that – should have tasted it more before I served it! I buttered pieces of a bagette and warmed it, then added slices of Gruyere and put it under the broiler. After I put the soup into the bowl, I added 3 pieces of bagette, then grated Gruyere cheese onto the bowl. (Afraid to put my china under the broiler). Thanks for the recipe.4 stars

    1. you can brown some beef chunks and add it to the soup, I would increase the cooking time by 10 minutes.

  10. I never leave comments on recipes but I had to with this one. I did the red wine (cooking wine) and substituted 2 cups bone broth and did only 6 cups of beef broth and it was AMAZING. Best french onion soup i’ve ever made. I would say that I’d prefer a swiss or parmesan cheese but wow.5 stars

  11. I had a hard time getting the onions to brown. I got lots of water in the pot from the onions. Am I doing something wrong?

    1. Make sure you Saute the onions on HIGH, and don’t stir a lot. Also, add the onions when the oil is shimmering hot.

  12. First of all I love the soup! But like the previous comment I too had a hard time browning the onions I almost thought I used to many. My butter was melted but perhaps not hot enough. I did set the IP to high and maybe stirred too much. I see that you suggested not to stir too much. I think it would taste richer if I had browned the onions longer. But I will definitely try it again using your tips provided.5 stars

    1. Hi Darla. Thanks for your feedback. I like browning it longer as well, it gives this soup a richer flavor. Try it the next time, and let us know how you liked it.

  13. The soup was good but tasted too sweet instead of savory. Other recipes don’t include brown sugar so definitely leave that out.4 stars

  14. I did a half portion for my little family but forgot to half the garlic (I added about 2 tables spoons) how do I fix this? Do it right next time? I’ll let yah know if it was overpowering but how could I counter balance it in the future.

    1. Well, its a bit hard to mask the garlic, what you can do is add more of the other flavors, I hope it still tasted good.

  15. Five onions were a lot, especially if you’ve got a smaller family. I cut everything in half and it was really good.

  16. Not going to lie, one of the best onion soups I’ve had. The only thing I changed was adding a spoonful of Better That Bouillon beef base dissolved in a cup of water for an extra kick.5 stars

  17. Third time making this and I always forget to add more onions. They cook down pretty good so if you you like it oniony you should add a few more onions. Having said that this is a great great recipe. The hardest thing is slicing the onions but I used a mandolin quick and not to many tears 😀👍5 stars

  18. I love soup but my husband does not, French onion he will tolerate. I made this soup for him for dinner last night and he had 3 bowls! Perfect for a chilly evening. We will make it again, the only improvement we could have made is using yellow onions not sweet onions, it does have a pretty sweet flavor. Better than Bouillon beef base worked perfectly well too. Thanks!5 stars

  19. Delicious. Wouldn’t change a thing. It took about 40 mins to caramelize the onions. Don’t skimp on the time to do this. That’s where all the flavor comes from.5 stars