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Keto French Onion Soup

Keto French Onion Soup

A keto french onion soup is still a cheesy, beefy broth topped with a toasted keto friendly bread recipe. Caramelized onions are swimming in this easy to make low carb soup that's just like the real thing, even with a few modifications.
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Prep Time 15 mins
Cook Time 1 hr 15 mins
Total Time 1 hr 30 mins
Course Appetizer, Side Dish, Soup
Cuisine American, French
Servings 8 serving
Calories 60 kcal


  • 3 sliced yellow onion
  • 3 cloves garlic
  • 2 tablespoon butter
  • 4 cup beef broth
  • 1/4 cup white wine (optional) (see notes for options)
  • salt and black pepper to taste


  • Slice onions then add to a pot on a medium low heat with butter. Allow to cook down and caramelize. Depending on onions, pot and heat this could take 30-60 minutes. You can't rush them.
  • Note, the closer they get to finishing stay close by to stir to keep them from sticking to the bottom.
  • When onions are almost finished grate 3 cloves of garlic over them then continue to cook.
  • Netx, when they are done add in wine and cook for 3-4 minutes.
  • Then pour in beef broth, add stems of thyme and bring to a simmer for 20-30 minutes for flavors to work together. Remove frome heat and serve.
  • This dish is served with gruyere cheese and bread. The nutrtion facts are for the soup only with the wine added. Click the link for the bread recipe in the ingredient list.
  • How to layer: I add a little cheese to the soup itself. Toast the bread then place it on top of the cheese. Then, I add more cheese on top of the bread and place in a oven on broil until the cheese has melted. Be sure your dish can stand that heat.


Helpful Recipe Tips

  • Don't rush the onions, I can't stress enough that turning up the heat is not a good choice. You'll end up burning the onions and ruining your recipe. When they start to get close to done you need to stay close and continue to stir them. They just take time and that's what makes this recipe special.
  • Can I make without bread, yes you can. Before having my own keto bread recipe I would always make it without the bread. Just understand the bread is what allows the cheese to sit on top unless you're using sliced cheese.
  • Best white wines for keto? As mentioned, I am not against a dry sherry wine but it is higher in carbs that keto friendly wines to cook with. Pinot Grigio, Pinot Noir and Chardonnay are a few you could use. Don't be afraid to use a red as well such as Cabernet, it's your recipe after all. Use a wine you enjoy to drink.


Nutrition Facts
Keto French Onion Soup
Amount Per Serving (1 bowl without bread and cheese)
Calories 60 Calories from Fat 26
% Daily Value*
Fat 2.9g4%
Saturated Fat 1.8g11%
Trans Fat 0.1g
Cholesterol 7.6mg3%
Sodium 262.5mg11%
Carbohydrates 4.7g2%
Fiber 0.6g3%
Sugar 2g2%
Protein 2.9g6%
* Percent Daily Values are based on a 2000 calorie diet.
Keyword Keto French Onion Soup
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