French Onion Soup Recipe

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods!

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods! // addapinch.com

French Onion Soup is one of my favorite soups, especially when the temperatures outside drop – even just a little.

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French Onion Soup Recipe

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods! // addapinch.com

There’s just something so very comforting about breaking through the cheesy, French bread exterior to get to the delicious brothy soup underneath!

It has always been one of those soups that I would look forward to having at restaurants, but wasn’t one I knew how to make at home when we first married.

It wasn’t until our third Christmas together that I tried my hand at making it. We were hosting the soup course of a Christmas progressive dinner and my husband requested it. It turned out perfectly and continues to be a go-to recipe for me.

How to Make French Onion Soup Recipe

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions, thyme, a slice of crusty bread and melty, delicious cheese! // addapinch.com

To make French Onion Soup, you’ll want to begin by caramelizing your onions. You’ll start by slicing your onions thinly and adding them, along with your salt and butter to your Dutch oven set over low heat. Stirring occasionally, you’ll let your onions cook until they have cooked down and are dark and caramel in color, about 45 minutes to an hour.

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions, thyme, a slice of crusty bread and melty, delicious cheese! // addapinch.com

Once your onions have caramelized, add in your garlic, beef stock and wine (or chicken stock, if you prefer) and simmer for another 30 minutes.

When ready to serve, ladle your French Onion Soup into oven safe bowls arranged on a baking sheet. Then top with slices of French bread and top with grated cheeses. Bake in the oven until the cheeses have melted, about 8 minutes.

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods! // addapinch.com

How to Make Slow Cooker French Onion Soup Recipe

I love to make my French Onion Soup in the slow cooker! It is a two-step process, but one that leaves you without having to babysit the onions as they caramelize or the soup as it makes it magic!

Slow Cooker French Onion Soup

Step One: Add your sliced onions to the slow cooker, along with butter and salt. Pop the lid onto your slow cooker and set it on low heat for 10 hours. This is perfect to do overnight so that in the morning you are ready for step two of your Slow Cooker French Onion Soup!

Step Two: Once your onions have caramelized in your slow cooker, you are ready to move to step two with your Slow Cooker French Onion Soup!

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods! // addapinch.com

There’s just something about a comforting bowl of French Onion Soup that seems to make any day better!

French Onion Soup Video

Here’s my French Onion Soup recipe. I hope you love it as much as we do!

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods! // addapinch.com
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4.84 from 6 votes

French Onion Soup

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods!
Cook Time1 hr
Total Time1 hr
Servings: 8
Calories: 466kcal
Author: Robyn Stone | Add a Pinch

Ingredients

  • 6 medium yellow onions thinly sliced
  • 4 tablespoons butter
  • 1/2 teaspoon salt
  • 2 tablespoons olive oil
  • 1 clove garlic minced
  • 8 cups beef stock (64-ounces)
  • 1/2 cup dry white wine or chicken stock
  • 8 slices French bread toasted
  • 2 cups Gruyere cheese grated
  • 1/2 cup Parmesan cheese grated

Instructions

French Onion Soup Recipe (Stovetop)

  • Add onions, butter and salt to large Dutch oven with olive oil set on low heat until the onions are browned and caramelized, about 1 hour. Add garlic and heat thoroughly, about one minute. Pour in beef stock and wine (or chicken stock). Stir, cover and allow to simmer over low heat for 30 minutes.
  • When ready to serve, ladle soup into oven proof bowls and top with bread and cheeses. Place on lined baking sheet and under the broiler in the oven until the cheeses have melted and browned lightly, about 8 minutes.

Slow Cooker French Onion Soup Recipe:

  • Add onions, butter and salt to slow cooker. Cook on low setting for 10 hours. 
  • Add garlic, beef stock and wine (or chicken stock). Stir well to combine and cook on low setting for 8 hours. 
  • When ready to serve, ladle soup into oven proof bowls and top with bread and cheeses. Place on lined baking sheet and under the broiler in the oven until the cheeses have melted and browned lightly, about 8 minutes. 

Notes

Make-Ahead French Onion Soup:
Cook French Onion Soup as directed and ladle into oven proof bowls. Cover the bowls and place into the refrigerator for up to 3 days. When ready to serve, preheat the oven, remove the soup from the refrigerator and place into the oven to reheat the soups for 15 minutes. Remove from the oven and top with bread and grated cheeses. Return to the oven and bake as directed. 

Nutrition

Calories: 466kcal | Carbohydrates: 47g | Protein: 25g | Fat: 19g | Saturated Fat: 11g | Cholesterol: 56mg | Sodium: 1234mg | Potassium: 694mg | Fiber: 2g | Sugar: 6g | Vitamin A: 10.7% | Vitamin C: 7.7% | Calcium: 47.6% | Iron: 18.2%
Tried this recipe?Share a photo on Instagram and tag me with @addapinch and #addapinch!

Enjoy!
Robyn xo

 

Originally published December 2010.

36 comments on “French Onion Soup Recipe”

  1. This is one of my husbands all time favorite soups….and I have NEVER made it. I feel like such a bum!!

    That’s it…I’m making this one. It’s happening.

    So thanks, from my husband 😉

  2. Mmmm French Onion soup is one of my favorites, but I’ve never made it myself. I’m going to put this on the menu for the week between Christmas and New Year – something light but perfect for the cold weather. Thanks, Robyn!

  3. We love French Onion soup (and it’s on every menu here in Quebec), but it’s been a while. I put a touch of maple syrup in mine; it brings out the sweetness of the caramelized onions.

  4. Yum. This sounds so good right now. I have terrible soup cravings in the winter because I’m perpetually cold.

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  6. yay! I’ve never made this before – always thought it was a long laborious process. But you make it sound easy. Can’t wait to try it!

  7. Back when I was in college I used to have tons of french onion soup – but never homemade. Must try your recipe for the holidays 🙂

  8. Oh I bet that was a great coup! And you are right, the wine is the trick. 🙂

  9. Great soup recipe! I could go for a bowl today! Merry Christmas to you!

  10. I am making this for arrival of family after their long road trip with beef vegetable soup too. Both are so easy to make and so very delicious. Linda

  11. This is one of my favorites too, especially in the winter! But I’ve never been brave enough to make it. Now I have a guaranteed recipe – thanks Robyn! xo

  12. Is there anything better than French onion soup? I think not. The last time I made it I put a bag of onions in the sous vide machine for 2 1/2 days and it worked great but I much prefer your traditional method.

  13. A local Irish pub uses Guinness Stout in place of wine. Best I’ve ever had. I’ll try your recipe.

  14. Sounds so good…one question,is there another suitable cheese I could use?..

  15. I did not make yet but it seems to be Yumm!!!!!!!!!!!!!!!!!!

  16. One of my favorite soups. Hubby prefers when I use half yellow onions and half sweet onions so the flavor isn’t too sharp (but I suppose a pinch of sugar would work too). I also add just a little bit of dried thyme towards the end of cooking the onions (along with the garlic).

  17. I can’t any of these people made, at least the stovetop version because nobody questioned the “olive oil” mentioned on the first line of instructions on how to make the soup.

    What about that “olive oil”?

    • You need oil to sweat and caramelize your onions. Butter is fine but a mix of olive oil and butter helps the butter to not burn. Kind of basic cooking knowledge. 

  18. Recipe looks awesome! Where did you get those cast iron bowls? Love those!

    • I hope you enjoy it, Nick! It’s sooo delicious – my family loves it!
      They are from Staub – I love using them! I’ve had them for a little while, but hopefully you should be able to find at any of their retailers.
      Thanks!

  19. Yes – wondering about the Olive Oil too mentioned on the directions of making the soup – how much olive oil or is it in replacement of the butter??

  20. Stupid question, I know; but can this soup possibly be made in an Instant Pot ??  Thank you 😊 

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