Easy Homemade French Onion Soup (2024)

By: Author Michelle

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This Easy Homemade French Onion Soup is full of sweet and delicious caramelized onions in a rich, flavorful broth topped with toasted bread and lots of melted cheese. It’s so simple to make this restaurant classic right in your own kitchen!

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I’m celebrating today because this is my 100th recipe post! I’d like to take a quick moment to say thank you so much to all of my readers, subscribers, and followers for your awesome support (#grateful)!

It makes me so darn happy that you all are trying and enjoying my recipes, and you inspire me each and every day to make this blog the absolute best it can be and to keep the recipes coming!

Okay, now on to the real reason you came here…the French Onion Soup!

From the moment I had my first spoonful of this dreamy soup as a kid, I was in love. Sure, it was the ton of melted, gooey cheese and bread on top that reeled me in, but it was the sweet, soft caramelized onions and super flavorful broth that kept me hooked. For ever and ever. Amen.

For so many years, I only ever ate this amazingly delicious soup when I went out to eat – which wasn’t a whole lot – so it was always a “special occasion” dish that was such a special treat whenever I was able to get it!

One day, my mom and I decided we were going to learn how to make French onion soup at home so we could have it whenever we wanted. Plus, sometimes it can be really hit or miss when ordering it out (too salty, flavorless, not enough cheese).

We wanted a winner that tasted awesome every single time!

Easy Homemade French Onion Soup (2)

We were definitely a little intimidated at first because we figured making French onion soup had to be difficult, but we knew it would be so worth it if we could get it right.

Well, we were pleasantly surprised to find out that it was actually really easy to make! All you need is a little patience to cook the onions low and slow until they are nicely caramelized, and then the soup comes together pretty quickly after that.

So we made several batches of soup until we got it just the way we wanted it (and thoroughly enjoyed taste-testing each and every one!). This is the recipe we ended up with, and it’s the one I’ve been making ever since.

INGREDIENTS YOU NEED:

  • Butter
  • Onions (any kind – I use a combination of white or yellow and red)
  • Garlic
  • All-purpose flour
  • Dry sherry or white wine (like Pinot Grigio or Sauvignon Blanc)
  • Beef stock or broth
  • Dried thyme
  • Salt and pepper
  • Crusty bread (such as Ciabatta or a French baguette)
  • Mozzarella cheese
  • Gruyere cheese

HERE’S A QUICK LOOK AT HOW TO MAKE EASY HOMEMADE FRENCH ONION SOUP:

Easy Homemade French Onion Soup (3)
Easy Homemade French Onion Soup (4)
Easy Homemade French Onion Soup (5)
Easy Homemade French Onion Soup (6)
Easy Homemade French Onion Soup (7)

TIPS & TIDBITS:

  • You can use any type of onions. Just remember that they will become sweeter as they caramelize, so sweeter onions like red or Vidalias will give you a sweeter soup than if you use white or yellow onions. I like using a combination of white or yellow along with red onions for a nice balance.
  • You must caramelize the onions low and slow, stirring often, until they are golden brown (not too dark), sweet, and delicious. This will take a good 30 to 45 minutes. Don’t try to rush it by cranking up the heat or by cutting down on the cooking time. You will either get burnt onions or onions that do not have that sweet, mellow flavor.
    • That being said, you can turn up the heat just a little bit to get them going if low on your stove is super low and things aren’t really moving along, but this step just takes a while if you want good results!
  • I like to use dry sherry in my soup, but you could also use a white wine such as Pinot Grigio or Sauvignon Blanc. In my opinion, Chardonnay does not work at all in this soup, and I don’t recommend it. And please use a sherry or wine that you enjoy drinking. It doesn’t have to be expensive. It just needs to taste good.
  • I prefer using beef stock over broth because I think the flavor is richer and deeper, but beef broth works fine too, and I have used it many times with excellent results. Homemade stock is always best if you have it. If not, just use a brand that you really like, which is exactly what I do most of the time.
  • If you don’t have oven-safe bowls that can go under the broiler, no worries! Just skip that step and, instead, toast the bread, place it on a baking sheet, top it the with the cheese, and broil until the cheese is melted. Then just put the cheesy bread on top of your soup.
  • Traditionally, French onion soup uses only Gruyere cheese, but I really like the gooeyness and pull of mozzarella, so I use both. Plus, Gruyere can be quite expensive, and the mozzarella helps to stretch it out. You could also use Swiss cheese instead of Gruyere.
Easy Homemade French Onion Soup (8)

Oh, and you can make the soup ahead of time too (without the bread and cheese, of course – save that for when you are ready to serve). You can either refrigerate it for a few days or, for longer storage, freeze it for up to 3 months. Reheat and then add the bread and cheese as directed.

So don’t wait to go out to eat to enjoy some French onion soup. Making it at home is super simple and, honestly, I’d rather have this homemade version any day. It’s that good!

I hope you try this recipe for Easy Homemade French Onion Soup and love it as much as I do. Thanks for visiting today!

Easy Homemade French Onion Soup (9)
Easy Homemade French Onion Soup (10)
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Easy Homemade French Onion Soup (11)

Easy Homemade French Onion Soup (12)

Easy Homemade French Onion Soup

This Easy Homemade French Onion Soup is full of sweet and delicious caramelized onions in a rich, flavorful broth topped with toasted bread and lots of melted cheese. It's so simple to make this restaurant classic right in your own kitchen!

5 from 7 votes

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Prep Time: 10 minutes minutes

Cook Time: 1 hour hour 10 minutes minutes

Total Time: 1 hour hour 20 minutes minutes

Servings: 4

Calories: 426

Author: Michelle / Now Cook This!

Ingredients

  • 4 tablespoons butter
  • 6 cups thinly sliced (⅛ to ¼ inch max) onions, any kind (see note below)
  • 1 clove garlic, minced
  • 2 tablespoons all-purpose flour
  • ½ cup dry sherry or white wine such as Pinot Grigio or Sauvignon Blanc
  • 4 cups beef stock or broth
  • ¼ teaspoon dried thyme
  • salt and pepper, to taste
  • 4 to 8 slices crusty bread (such as ciabatta or a French baguette), use 1 to 2 slices per bowl depending on the size of the bread
  • ½ cup shredded mozzarella cheese
  • ½ cup shredded Gruyere cheese

Instructions

  • Melt the butter in a large pot over low heat. Add the thinly sliced onions; cook, uncovered, stirring often, for 30 to 45 minutes or until the onions are soft and caramelized (nicely golden brown – they shouldn't be very dark).

    This step needs to be done low and slow! Don't try to speed up the process by cranking up the heat, as you will burn your onions rather than caramelize them. That being said, you can turn up the heat just a little bit to get them going if low on your stove is super low and things aren't really moving along, but this step just takes a while if you want good results!

  • Add the garlic and cook, stirring for one minute.

  • Add the sherry (or wine) and deglaze the pan (scrape any browned bits off the bottom with a wooden spoon). Simmer until the wine has mostly evaporated.

  • Add the flour and cook, stirring, for one minute.

  • Add the beef stock (or broth) and thyme; stir to combine. Bring to a boil; reduce the heat and simmer for 10 minutes, stirring occasionally. Taste and season with salt and pepper as needed.

  • Preheat the broiler. Position the oven rack in the middle of the oven.

  • Toast the bread slices. You can do this in the toaster or, since you will be using the broiler in the next step, under the broiler.

  • Place 4 oven-safe bowls (make sure they can be put under the broiler) on a large baking sheet. Ladle the soup into the bowls.

  • Top each bowl with 1 or 2 slices of bread, depending on the size of your bread (if your pieces are large, cut them to fit the bowl if you need to).

  • Sprinkle each with 2 tablespoons of mozzarella and 2 tablespoons of Gruyere cheese.

  • Broil until the cheese is melted. ENJOY!

Notes

  • You can use any type of onions. Just remember that they will become sweeter as they caramelize, so sweeter onions like red or Vidalias will give you a sweeter soup than if you use white or yellow onions. I like using a combination of white or yellow along with red onions for a nice balance.
  • If you use white wine instead of dry sherry, I do not recommend using Chardonnay, as it does not work well in this recipe (in my opinion).
  • I prefer to use beef stock for a richer, deeper flavor, but I have also used beef broth with excellent results.
  • You could use Swiss cheese instead of Gruyere.
  • If you don’t have oven-safe bowls that can go under the broiler, skip that step and, instead, toast the bread, place it on a baking sheet, top with the cheese, and broil until the cheese melts. Then just put the cheesy toasts on top of the soup.

Did you try this recipe? I’d love to see it!Mention @nowcookthis or tag #nowcookthisrecipes!

Post updated on 2/10/21 (updated some of the images).

Easy Homemade French Onion Soup (2024)

FAQs

What broth is French onion soup made of? ›

What Is French Onion Soup? French onion soup, or soupe à l'oignon gratinée, is a classic French dish made with caramelized onions and beef stock or broth. The soup is topped with bread and cheese, then gratinéed to rich, gooey perfection. It's traditionally served in a ramekin or a ceramic crock with a handle.

How do you deepen the flavor of French onion soup? ›

A few sprigs of thyme and a bay leaf elevate the soup even more, but I take it a step further, adding a splash of fish sauce for complexity and depth—don't worry, it won't taste fishy—and a hit of cider vinegar to balance some of that oniony sweetness.

What is the difference between onion soup and French onion soup? ›

Is there a difference between onion soup and French onion soup? Onion soup usually requires a combination of a variety of onions. French onion soup is traditionally made with yellow onions. Also, French onion soup is always made with beef stock while onion soup uses any type of stock or broth.

What is a substitute for French onion soup? ›

Stir onion flakes, beef bouillon granules, onion powder, parsley flakes, celery seed, paprika, and black pepper together in a bowl. Use as a substitute for a 1-ounce envelope of dry onion soup mix.

What onion is best for soup stock? ›

Yellow is the ideal variety for caramelizing. When you are sauteing onions to build flavor as a base for your dish (soup, tomato sauce, you name it), the yellow onion is your friend. That being said, white onions are a totally acceptable substitute for yellow, especially if you're cooking them.

Does it matter how you cut onions for French onion soup? ›

For French onion soup, it is best to slice the onions into thin, even slices. This will allow them to cook evenly and caramelize properly. You can achieve this by cutting the onion in half, placing the flat side down, and slicing it widthwise into thin slices.

Why do you put baking soda in French onion soup? ›

The caramelized onions for this soup cook more quickly due to a pinch of baking soda but still have that deep, slow-cooked flavor.

How do you fix bland onion soup? ›

Fix a bland onion soup by using supermarket broth and mild white onions, tasteless oil for sauteeing, stale plain white bread instead of croutons, and mild white cheese. Start by reducing the broth. Simmering out some water will intensify the flavor of the broth. Once you get it to the right point, add some salt.

Why do you add flour to French onion soup? ›

Onion soup, at its very essence, is nothing more than onions and water boiled together. Period, done, finished, everything added from that point on is pure opinion. Caramelizing the onions brings out sugars, and makes a more luxurious silky and sweet soup, adding flour gently thickens and provides body.

How long does homemade French onion soup last in the fridge? ›

To store: store any leftover French onion soup in an airtight container in the refrigerator for up to 3-5 days without the baguette on top. Reheat in the microwave and then top with cheesy baguette as instructed.

Why is my French onion soup bitter? ›

Burned onions – result in bitter soup. Be careful to not burn the onions/cook them until they are too dark in color – you don't really need to cook them until they are dark brown – golden brown/light brown is enough.

What is the bowl called for French onion soup? ›

French onion soup is traditionally served in lionhead bowls, which are deep but not very wide porcelain bowls. Here are four reasons why these bowls are perfect: Plenty of soup. Even as the bread on top starts to soak up some of the soup, there's still plenty left underneath.

Why is my French onion soup watery? ›

Sometimes soup just needs to simmer longer to reach the perfect consistency. Check to see if the vegetables are tender, and then taste the broth. If the soup tastes a bit watery, give it more time.

Is French onion soup for the poor? ›

However, onion soup is often wrongly made and understood. Indeed, many tourists see it as a fancy and luxurious product while, like explained above, it was originally a dish for the poor and had a purpose that we could qualify as the opposite of fancy (curing hangovers).

Can you use red onion instead of yellow in French onion soup? ›

This easy French Onion soup recipe brings back wonderful memories of my favourite eatery in Paris. By using red onions, you don't need to spend hours perfecting the caramelization and my secret weapon is using balsamic to give the onions colour.

Is French onion soup a clear broth? ›

Introduction: French Onion Soup

Unlike many chain restaurants' (and I have tried many chain restaurants' French Onion Soup), this soup base is a delicate clear liquid.

Is onion soup made of chicken broth? ›

Beef broth: Homemade is excellent, but store-bought is fine too. It's also OK to use chicken broth. The soup will still taste great, but its color will appear lighter. Seasonings: I use just a pinch of salt, freshly ground black pepper, and dried thyme.

What is the name of the French soup stock? ›

Consommé: Concentrated Soup Stock. Danilo Alfaro has published more than 800 recipes and tutorials focused on making complicated culinary techniques approachable to home cooks. Consommé (pronounced "con-som-AY") is a strong, rich, flavorful soup made by concentrating and clarifying stock.

What is a French broth called? ›

French cuisine, revered for its finesse and vibrant flavors, brings to the table a plethora of exquisite culinary offerings.

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