Making this traditional crockpot french onion soup recipe is even simpler because of your gradual cooker.

Due to this crockpot french onion soup you’ll by no means return to the stovetop technique once more.

We make this french onion soup recipe with brandy for added depth of taste and by cooking all of it up within the gradual cooker we get an much more luxurious and scrumptious soup that everybody can take pleasure in.

The gradual simmering helps the flavors to construct and develop making this the very best french onion soup recipe to attempt. Serve it up with a toasted slice of baguette with loads of melted cheese for tasty bowls of heaven.

Conventional French Onion Soup

French onion soup is a recipe that has been round for the reason that 18th century. Invented in France it was usually served as a starter soup, earlier than a meal, nevertheless it has since develop into a beautiful primary dish and a comforting one at that.

Made with a contemporary gradual cooker the recipe has gotten even simpler than ever earlier than which means you could take pleasure in it extra usually and with out an enormous trouble. All that’s required is a little bit of persistence.

French Onion Soup Ingredients

Substances you’ll want for French Onion Soup:

  • Onions –yellow or white
  • Butter
  • White flour
  • Brandy –or Cognac
  • Low sodium beef inventory
  • Salt
  • Bay leaves
  • Recent thyme
  • Baguette bread
  • Worcestershire sauce
  • Mozzarella cheese– or parmesan

For the precise quantities wanted, please see the recipe card beneath.

French Onion Soup Ingredients 2

The best way to Make Crockpot French Onion Soup

Peel the onions and slice them thinly. Set them apart till wanted.

How to Make Crockpot French Onion Soup

Add 2 tablespoons of butter, onions, and pinch of salt to a big pan and prepare dinner till they’re caramelized. Stir the onions each 10 minutes or so till a deep shade has been achieved. The longer the onions prepare dinner, the deeper and higher the soup taste shall be.

French Onion Soup Step 2

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French Onion Soup Step 4

Add the brandy to the pan to deglaze it and permit the onions and brandy to prepare dinner for five minutes or so or till the alcohol evaporates.

French Onion Soup Step 5

As soon as that has completed, add your onions to the underside of your gradual cooker.

French Onion Soup Step 6

Add the meat inventory, bay leaves, and thyme sprigs to the gradual cooker.

Set the pan again on the range over medium warmth.

Add the remaining butter to the pan and add in ⅓ cup of flour to make the roux. Stir consistently to get the flour toasted and to assist it take in the butter and any remaining bits of caramelized onion.

French Onion Soup Step 7

French Onion Soup Step 8

As soon as the flour has been toasted, add in ½ cup of inventory from the gradual cooker and whisk it into the flour combination till a easy paste has been achieved. The combination ought to be runny, so if wanted, add in slightly extra inventory.

French Onion Soup Step 9

Add your roux to the gradual cooker and stir to mix.

Add within the Worcestershire sauce and the remainder of the salt. Combine collectively.

Add the lid and permit your soup to prepare dinner over medium warmth for six hours.

As soon as the soup is prepared, put together the baguette bread by slicing it into ¼-½ inch thick items and inserting them onto a baking sheet.

Toast within the oven at 350 levels F till toasted.

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French Onion Soup Step 11

Serve the soup in an oven-safe bowl and prime with a slice or two of the toasted baguettes.

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French Onion Soup Step 13

Add a thick layer of cheese over the bowls and place them into the oven. Broil on excessive for five minutes or till the cheese has melted and is golden.

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French Onion Soup Step 16

Sprinkle with some recent thyme on prime and serve.

Take pleasure in.

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What’s The Greatest Cheese for French Onion Soup?

We use mozzarella or parmesan cheese for the tops of our soups as a result of they’re melty and scrumptious in addition to simple to search out however in all honesty, there’s a vast quantity of cheese you possibly can attempt in your soup.

A number of the extra favourite and conventional cheeses for serving with french onion soups embody:

  • Gruyere
  • Emmental
  • Swiss or Child swiss

All of those cheeses will pair nicely with caramelized onions and offer you a gooey melty cheese prime in your broiled soup.

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The Greatest Onions for French Onion Soup

When making french onion soup you’re going to need to select an onion based mostly upon your preferences. Some onions are naturally sweeter than others, which means that they’ll assist the caramelization course of and assist the onions to develop a deeper and stronger taste profile. However additionally they imply that the soups are sweeter in consequence.

White onions and yellow onions work nicely and aren’t too candy both so your broth stays extra on the savory facet of issues. However different onions that additionally work nicely in french onion soup embody:

  • Purple onions
  • Vidalias
  • Maui
  • Walla Walla Sweets

Remember the fact that these are sweeter onions and may end up in your soup broth turning out slightly sweeter. If at any level you’re feeling like your soup is simply too candy in your liking you possibly can slowly add in tiny additions of salt or vinegar (apple cider vinegar or white vinegar) to assist reduce down on the sweetness. Simply add the salt or vinegar in slowly and style after every stirred addition to just be sure you don’t make the soup too salty.

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French Onion Soup Recipe Ideas

To thicken your soup you may also mix 1 cup price of the gradual cooker french onion soup and blend it with the remainder of it to realize a thicker consistency.

This selfmade french onion soup is supposed to be eaten proper after being taken out of the oven, particularly if you’ll serve it with the toasted baguette on prime.

The caramelization of the onions is a key step, it often takes from 45 minutes to 1 hour on low warmth. Don’t skip or attempt to shorten this step, because it’s key to attaining the flavour of the ultimate dish.

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Storage and Reheating

You may maintain your french onion soup with brandy saved in an hermetic container for as much as 6 days within the fridge.

Your soup will even last as long as 4 months in an hermetic container within the freezer. I like to recommend permitting it to chill fully earlier than inserting it right into a freezer-safe Ziploc bag and freezing the soup flat on a baking sheet. This can make it loads simpler to retailer and thaw later.

Guarantee that when freezing your soup you don’t freeze the soup with the selfmade croutons and cheese and that you’re ONLY freezing the cooled soup.

You may reheat your soup in a gradual cooker from frozen by eradicating the soup from its container after which heating the soup over low or excessive warmth till sizzling and warmed by means of. This can take about 2-4 hours.

It’s also possible to thaw your soup in a single day within the fridge after which reheat it in a big pot on the stovetop.

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Why does french onion soup want Worcestershire sauce?

The addition of Worcestershire sauce helps so as to add a depth of taste to the soup. There are quite a lot of components in Worcestershire sauce together with anchovies, molasses, and spices which make this a superb addition to many various recipes as a result of it helps to spherical off the flavors. In our soup, it helps to deliver out extra of the meat taste from the soup broth.

Can I make french onion soup with out alcohol?

Sure, whereas wine and brandy are mostly used for deglazing the pans on this soup recipe you possibly can merely omit the alcohol and use extra beef inventory or water as an alternative.

In case you select to make use of wine as an alternative of brandy, listed here are just a few recommendations:

  • Sauv Blanc
  • Semillon
  • Pinot Grigio
  • Chardonnay
  • Merlot
  • Pinot Noir

Any non-sweet, dry white, or purple wine will work nicely for this recipe.

What’s a roux?

A roux is a combination of fat and flour which are cooked collectively (often in equal half measures). They’re whisked collectively till easy, browned, after which are added to sauces and soups to assist thicken them. Your roux may be white, mild brown, or darkish brown relying on how lengthy you prepare dinner it.

What does it imply to deglaze a pan?

To deglaze a pan means so as to add liquid to a sizzling pan to assist deliver up the caramelized bits and items that have been caught to the pan. It is a good way so as to add further taste to your recipes as a result of they’re filled with nice taste. Deglazing the pan additionally helps to make the clean-up slightly simpler later as a result of the bits that have been caught to the pot are not there.

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In case you love onions and caramelized onion recipes as a lot as we do then you definately’re going to like these recipes too:

Yield: 5

Crockpot French Onion Soup

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The traditional French onion soup, made within the gradual cooker, is ideal to develop the extremely tasty taste of the caramelized onions, served with a toasted slice of baguette with loads of melted cheese. Heaven on a bowl!

Prep Time
10 minutes

Cook dinner Time
7 hours

Whole Time
7 hours 10 minutes


  • 5-6 yellow or white onions
  • 4 tablespoons butter
  • 1/3 cup white flour
  • 1/3 cup brandy or cognac
  • 6 cups low sodium beef inventory
  • 2 teaspoons salt or to style
  • 2 bay leaves
  • 4 sprigs of recent thyme
  • Baguette bread (one or two slices per bowl of soup)
  • 2 teaspoons Worcestershire sauce
  • Cheese: mozzarella and parmesan 


  1. Begin with peeling and slicing thinly the onions. Put aside. 
  2. In an enormous pan add 2 of the butter spoons and the onions and a pinch of salt and prepare dinner them beginning on medium warmth, then going to low warmth till they’re caramelized. They develop into fully comfortable and golden translucent. Stir each few 10 minutes or so. Don’t skip or attempt to shorten this step, because it’s key to attaining the flavour of the ultimate dish. 
  3. Add the brandy to deglaze the underside of the pan and let prepare dinner for five minutes so the alcohol evaporates. 
  4. Add the caramelized onions to the gradual cooker and add the meat inventory, bay leaves, and thyme sprigs, and set on medium warmth. 
  5. Put together the roux with a few butter spoons and 1/3 cup of white flour. Stir consistently so the flour will get toasted and absorbs the butter and any remaining bits of the caramelization of the onions. 
  6. As soon as the flour is toasted add ½ cup of inventory from the gradual cooker and whisk it till a easy paste is achieved. It ought to be runny, so if wanted add extra inventory. 
  7. Add the roux to the gradual cooker and stir to mix nicely with the remainder of the components. Add the Worcestershire sauce and the remainder of the salt and blend. Let prepare dinner for six hours on medium warmth. 
  8. As soon as the soup is prepared slice the baguette bread and toasts the slices within the pan. Preheat the oven to 356F or 180ºC
  9. Serve the soup within the oven-safe bowls and prime them with one or two slices of toasted baguette. 
  10. Add a thick layer of cheese everywhere in the bowl and convey to the oven with the broil perform for five minutes or till the cheese has melted and is golden. 
  11. Sprinkle a little bit of the recent thyme on prime and revel in.

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