French Onion Soup (2024)

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Hola Mi Gente,

Coming at you today with a recipe that is beloved on all sides of our family. When I polled between this recipe and another one on instagram earlier last week, this one won in a landslide! I think part of that comes from the name, right? We tend to think about French Onion Soup as a treat whenever we go out to a restaurant, and because of that we can think it’s complicated. I’m here to tell you that this is a lie!

Onion soup is a recipe as old as time—we have historical knowledge that it existed during the Roman Empire, but was largely believed to be a peasant food because onions are relatively abundant and easy to grow. It had a resurgence in the mid-19th century as an starter soup in Paris, where the onion soup was upgraded to include meat stock, cheese, and bread. For my plant based people, you can definitely alter this dish to be plant based, you’ll just want to swap out the butter for a good vegan butter (a nice sugar content in your vegan butter will go a lot longer way in caramelizing the onions) and a nice, full vegetable broth.

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The biggest part of this soup comes in the technique in caramelizing onions. And if I’m honest, the technique is simple: patience. The underlying flavor of this soup is the deep umami flavor of the caramelized onions. If you rush this process, the result will be a bitter charred flavor, and if you underestimate and skip this process the flavor will be nowhere near as deep or complex. Onions are wonderful because they are a prime example of why cooking is science; as you cook onions down, they taste and look different at every stage. In order to caramelize onions well, all you need is time. About 20-35 minutes worth of it, and steady, medium heat. Don’t worry, I’m going to talk you through this process in great depth in the recipe, so that you get it down just right and can add it to your kitchen skill set with ease!

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Once you’ve got the onions down, the rest is SO simple, it’s ridiculous. You literally add broth, season to taste, and make cheesy bread (yum!). I promise, one time of getting down your caramelization process down, and you’ll be adding this to your weekly meal plan rotation in no time. I always like to put on a show that is about 30 minutes long when I’m caramelizing onions. It helps me time the process, and keeps me from stirring the pot too much and disrupting the caramelization.

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This meal pairs perfectly with a good Roast Chicken and Ratatouille for a proper French-style meal. Whether you enjoy it as a side or main though, I guarantee it’ll make your tastebuds sing as you sip into the melty cheese, deep umami flavor of the broth, and slightly sweet contrast of the onions and the splash of white wine.

Buen Provecho!

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Demystifying this French classic by explaining the full process of caramelizing onions so that you can take this restaurant quality soup off your ordering menu and into your weekly meal plan!

Prep Time 10 minutes mins

Cook Time 55 minutes mins

Course Main Course, Soup

Cuisine French

Servings 4

Equipment

  • 4-5 Q Dutch Oven

  • Cutting Board & Knife

  • Oven or Toaster Oven

  • Garlic Mincer or Microplane

  • Soup Ladle

Ingredients

Soup

  • 4 Large Yellow Onions Sliced Thinly
  • 4 TBSP Butter Plus extra if needed
  • 1/2 C Dry White Wine
  • 2 Sprigs Fresh Thyme
  • 1 Quart Beef Broth
  • 2 C Water
  • 1 Bay Leaf
  • Salt to Taste
  • Pepper to Taste
  • 1/2 C Shredded Swiss Cheese
  • 1/2 C Shredded Gruyere Cheese

Cheesy Toast

  • 4-6 Slices Sourdough Bread
  • 4 TBSP Butter
  • 2 Cloves Garlic Grated
  • 1/2 C Shredded Swiss Cheese
  • 1/2 C Shredded Gruyere Cheese

Instructions

Caramelizing the Onions

  • Slice 4 onions in half from root to stem, and then slice into thin slices. Heat a wide-bottom pot over medium heat and melt the 4 tbsp of butter. Once the butter is melted add in your onions and toss to coat in the butter. The pile of onions will sit pretty high in your pot—allow them to cook down. You want to adjust your heat to allow your onions to properly caramelize—this means that they will soften and turn a golden color without burning. To do this you need to find the perfect medium temperature on your stove. If at any point you see your onions browning or sticking to the pot, you need to lower the heat. Caramelizing will take 20-35 minutes, so be patient! Check your onions every 7-10 minutes or so, tossing to keep coating in the butter. This also makes sure that the onions on top are cooking evenly, until they can all be evenly scattered along the bottom of the pan. They will cook down considerably during this time. These onions are the foundation of the flavor for this soup, so be patient with them. If your pan starts to dry out, add 1 tbsp of butter as needed.

  • You will know your onions are done because they will have a golden brown color (no char) and will be completely soft, without disintegrating.

Soup

  • Add in the 1/2 C of white wine to your pot with the onions, and allow to simmer and absorb into the onions for about 5-7 minutes. This will deglaze the bottom of your pot, and also cook out the alcohol to leave a lovely sweet flavor into the soup.

  • Add in the fresh thyme and a bay leaf, and pour in the beef stock and water and bring to a boil over high heat. Allow to cook at a rolling boil for about 5 minutes, and then bring down to a simmer at medium heat. Begin seasoning the soup with salt 1 TBSP at a time, stirring well in between tastings. Remember that soup takes a generous amount of salt. Add pepper to taste. Turn off the heat and add in the mixture of the cheeses right before serving, stirring to melt and disperse.

Cheesy Toast

  • Melt the butter in a microwave proof bowl (should take a little less than a minute) and add in the grated garlic. Brush your slices of bread with the garlic butter mixture. In a medium bowl, mix together the Swiss and Gruyere cheeses.

  • Place in a toaster oven or regular oven on broil for 2-3 minutes. Just enough for the bread to dry out, but not toast too much. Remove from the toaster and add cheese. Return to the toaster or oven until the cheese has melted, and the edges of the bread are starting to brown (about another 2-3 minutes).

To Serve

  • Ladle out soup into bowls, making sure to add a generous helping of onions to each bowl. Place a piece of cheese toast on top of each bowl, and garnish with fresh herbs or micro greens if you wish. Enjoy!

Keyword Easy French Onion Soup

Related

Mary-Beth Johnson

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Mary-Beth is a creative, food-obsessed, Georgia transplant living Chicago. She is proudly and fiercely Latina, and more specifically Chapina. In her day to day she is a food educator to students around Chicagoland aged 3 to 80+, both virtually and in-person. She is passionate about cultivating the truth that every person has an understanding of food that deserves being brought to the table, and that time in the kitchen can be sacred, passionate, and an act of love for self and others. Outside the kitchen you can find her at the intersections of infertility, chronic illness, and a deep love for the dignity of all humans. She hopes to create a space that is holistic about the role of food in the social, political, relational, and physiological dynamics of our world.

French Onion Soup (2024)

FAQs

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 French onion soup and regular onion soup? ›

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

What broth is French onion soup made of? ›

This soup traditionally is made with beef stock, though sometimes a good beef stock can be hard to come by and expensive to make. If you use boxed stock, taste it first! If you don't like the taste, don't use it. (If you cook a lot of beef or beef roasts, save the scraps and freeze them to make a stock with later.)

Is French onion soup good or bad for you? ›

French Onion Soup is a healthy food

The cheese topping on French onion soup adds saturated fat and cholesterol, making the dish even less healthy. However, you can reduce the sodium content of the soup by using a low-sodium beef stock or chicken broth instead of regular stock.

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. Topping the soup with hot, cheesy toasts prepared while the soup simmers, eliminates the need to bake the soup in specialty French onion soup bowls.

Why does my French onion soup taste bland? ›

To improve the blandness of your French onion soup: add more seasoning, caramelize onions longer than usual, use high-quality beef broth, simmer for extended time and include melted cheese with crouton as toppings for added richness.

Are red or yellow onions better for French onion soup? ›

Onions: You can use white, yellow or red onions for French onion soup. But to make it the classic way, you will need 5-6 large yellow onions, peeled and thinly sliced. Butter: The tastiest (French) way to caramelize those onions.

Why is French onion soup so expensive? ›

First, French onion soup calls for a ton of onions. While onions aren't expensive, there's a lot of labor involved in halving, peeling, and slicing 10, 12, 50, or one billion onions (I don't know how much soup you make).

How should onions be cut for French onion soup? ›

Get the oven to 400 degrees while you prepare the onions: Cut down through the poles of each onion, down through the root end into and through the stem end. Peel each half, keeping the flesh tethered at the root end. Slice 1/4-inch thick longways, pole-to-pole, using a mandolin if you have one.

How do you thicken French onion soup? ›

If you want to thicken your French onion soup, you can add a bit of flour. Combine a couple of tablespoons of flour with a teaspoon of salt and whisk in about a quarter cup of water. Bring the mixture to a boil, then reduce the heat and simmer for about 10 minutes, until thickened.

Why do French people eat onion soup? ›

The Onion Soup, a traditional and warming dish

It has even become a trendy dish that tourists are eager to try to experience French gastronomy. However, onion soup is in fact not part of French people's daily meals. It was originally meant to be eaten after a family reunion in the middle of the night to cure hangovers

What is Panera French onion soup made of? ›

Sweet caramelized onions in a savory broth with a sherry wine vinegar gastrique, sea salt, topped with cheese and black pepper and sea salt croutons.

What is the etiquette for eating French onion soup? ›

With such a soup, a knife is your friend, not your enemy. Using both the soup spoon and the knife, push the baked cheese against the rim of the cup or bowl and cut it gently with the knife. Once you've broken the cheese barrier, you can use the knife again to nudge bits of cheese onto the spoon.

Is onion soup good for blood pressure? ›

Onions contain antioxidants and compounds that may reduce your risk of heart disease by fighting inflammation and lowering triglyceride and cholesterol levels. They contain a large amount of quercetin, a flavonoid antioxidant and anti-inflammatory that may help lower high blood pressure .

Is French onion soup a laxative? ›

The natural way to overcome the problem is to eat foods which have a naturally laxative effect - such as onion soup, pears, plums, bran, linseed oil, green vegetables and minerals - and avoid starchy foods and white flour products.

How to make French onion soup less bland? ›

Most likely it could be from not caramelizing the onions long enough, as this is crucial for flavor development. Also, be sure to use a good quality broth and season the soup properly with salt and pepper. You can try adding a splash of balsamic vinegar or Worcestershire sauce for a boost of flavor.

How do you add depth of flavor to soup? ›

"If your broth is lacking in savory richness, try adding roasted onion, tomato paste, mushrooms, seaweed, soy sauce, or miso. These ingredients add umami flavor and depth to broth," she says.

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