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French Onion Soup with toasted cheese
5 from 4 votes

French Onion Soup in 45 Minutes

This French Onion Soup recipe is so easy to make and gives full flavor. In under 45 minutes you will have a bowl of delicious comfort to enjoy with your family and friends.
Prep Time5 minutes
Cook Time30 minutes
Total Time35 minutes
Course: Soup
Cuisine: French, Gluten-Free
Keyword: Winter
Servings: 4 portions
Author: Belgian Foodie


  • 1 tbsp olive oil
  • 4 onions large (see notes)
  • 2 cloves garlic minced
  • 1 tsp thyme dried
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 100 ml white wine
  • 1 1/4 l chicken broth (or beef broth if you prefer) (see notes)
  • 200 g Gruyère cheese (or Emmental, Fontina, Parmesan, Asiago or any blend of these cheeses)


  • Pour the olive oil into a Dutch oven or casserole over a medium heat.
  • Chop the onions into large pieces. Depending on the size of the onions, I usually cut them in eighths. Add them to the hot olive oil.
  • After a few minutes, reduce the heat. Add the minced garlic and then let simmer another minute.
  • Add the thyme, salt and pepper. Let the onions simmer covered until very soft and lightly brown. Stir from time to time to prevent the onions from sticking.
    French Onion Soup - Onions in Pot
  • Add the white wine and mix so it cleans the bottom of the casserole. Let the alcohol evaporate.
  • Add the broth and continue to cook over a low heat for about 20 minutes. The broth should amply cover the onions. Add more broth, as needed, until you have the thickness that you like. This recipe will give you a thicker consistency.
  • Put the grated cheese in a bowl and let everyone add it to their soup. Adding the cheese separately allows each person to take the amount they like. It's also better so that the cheese is not in the casserole when you want to reheat any leftovers the next day.
  • Serve the soup and enjoy. You can serve with warm bread if you like.


  1.  You can use yellow or red onions, or a combination of both.  I even sometimes add shallots as well.  Red onions give a bit more flavor and are good with beef broth.  If you use red onions and beef broth, you might even substitute red wine for the white wine.
  2. I find that chicken broth allows the flavor of the onions to stand out more.  It also gives a lighter result.  Beef broth makes the soup a bit more hearty.  If you are looking for a vegetarian version, use vegetable broth without any regret.
  3. Gruyère cheese is traditionally added to French onion soup.  However, feel free to add a mixture of cheese that have give a distinct taste and melt well, such as Fontina, Asiago, Parmesan and Emmental.


Nutrition Facts
French Onion Soup in 45 Minutes
Amount Per Serving
Calories 397 Calories from Fat 171
% Daily Value*
Fat 19g29%
Saturated Fat 10g63%
Polyunsaturated Fat 1g
Monounsaturated Fat 7g
Cholesterol 58mg19%
Sodium 654mg28%
Potassium 554mg16%
Carbohydrates 38g13%
Fiber 5g21%
Sugar 16g18%
Protein 16g32%
Vitamin A 0IU0%
Vitamin C 0mg0%
Calcium 0mg0%
Iron 0mg0%
* Percent Daily Values are based on a 2000 calorie diet.