Keto French Onion Soup - Easy To Make Recipe (2024)

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Creamy, zesty, and cheesy, a bowl of this keto French onion soup is the height of luxury. Made with low-carb croutons and shredded gruyere cheese.

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Low-Carb French Onion Soup

French onion soup is one of the most easily-recognizable soups out there. The rich beef broth, bold slices of onion, all topped with melted Shredded gruyere cheese and crispy bread.

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Classic French onion soup recipes vary but are usually low-carb until they add the baguettes on top. It’s basically a rich soup made with beef broth and cheese – and sometimes includes wine.

I stayed true to the original recipe but changed the baguettes. It has the same authentic cheesy and savory flavors that you love.

Keto French Onion Soup

This recipe will only work in your meal prep if you store it without the cheese. Once you add the cheese, it won’t store as nicely. Just keep it in an airtight and leakproof container in the refrigerator for up to 3 days.

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When you are ready to enjoy it again, add the cheese and bread on top and it will taste as good as fresh soup.

Keto Croutons

The secret to this amazing keto French onion soup is the tasty bread on top! If you have a favorite low-carb bread, go ahead and use it. My favorite recipe for low-carb bread literally takes 90 seconds to make.

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This 90-second keto bread tastes amazing toasted, so pop it in the toaster before adding it to your soup.If you broil the bread or heat it up in a toaster oven, it can even become nice and crispy, resembling croutons.

This bread recipe is slightly sweet, made with almond flour, butter, heavy cream, and a few other ingredients.

What To Eat With French Onion Soup

French onion soup is a flavorful soup that really goes well with almost anything. The bold flavors in pesto are a natural companion, so enjoy this soup with a low-carb pesto chicken salad.

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It’s also a flavorful soup that is perfect with salmon. This keto pesto salmon bowl is also delicious with some French onion soup.

Best Cheese For French Onion Soup

There is a lot of room for creativity and personal preference when it comes to French onion soup. If you want a nutty and earthy cheese, go with gruyere. If you prefer something milder that melts into the soup, go with provolone or mozzarella.

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It’s best to stick with white cheese, since that is what you usually see on French onion soup. Fontina and Monterey Jack are also varieties of mild white cheese that will melt really well.

Keto French Onion Soup Recipe

Here’s the list of ingredients to make this creamy keto French onion soup. Exact measurements and instructions are located in the printable recipe card just a little bit further below.

Prep Time: 25 minutes
Cook Time: 35-40 minutes
Servings: 5
Net Carbs: 6 net carbs per serving

Ingredients:

Medium onions
Butter
White cooking wine
Minced garlic
Fresh thyme
Beef broth
Shredded gruyere cheese
90 second bread
Garlic powder
Salt and pepper

Instructions:

Place two tablespoons of butter into a pot over medium heat on the stove.

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Add the onions to the pot, and saute in the butter, stirring often until softened.
Once softened, reduce the heat to medium low, and saute until the onions are browned and caramelized. This takes about 25 minutes.

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While the onions are cooking, prepare the 90 second bread in square containers. Cut each slice in half to form a total of 4 slices of bread.
Place the bread on a parchment lined baking sheet.
Melt the remaining butter, and brush over the bread.

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Sprinkle the bread with the garlic powder.
Place the bread under the broiler until toasted, and then cut into cubes.

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Once the onions are done, add in the garlic and thyme, and saute for 30 seconds.

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Pour in the white cooking wine to deglaze the pot.

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Stir in the beef broth and salt and pepper to taste.

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Simmer for 10 minutes.

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Remove from the heat, top with the bread cubes and shredded cheese before serving.

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Keto French Onion Soup

Creamy, zesty, and cheesy, a bowl of this keto French onion soup is the height of luxury. Made with low-carb croutons and mozzarella cheese.

CourseSoup

KeywordKeto French Onion Soup

Prep Time 25 minutes

Cook Time 40 minutes

Total Time 1 hour 5 minutes

Servings 5 people

Calories 392 kcal

Ingredients

  • 2mediumYellow Onionscut in half and then sliced thinly
  • 4tbspButter divided
  • 1/4cupWhite Cooking Wine
  • 3tspMinced Garlic
  • 1tbspFresh Thyme
  • 4cupsBeef Broth
  • 4ouncesShredded Gruyere Cheese
  • 1quart Baby Bella Mushrooms
  • 2servings 90-second Bread
  • 1/4tspGarlic Powder

Instructions

  1. Place two tablespoons of butter into a pot over medium heat on thestove.

  2. Add the onions to the pot, and saute in the butter, stirring often until softened.

  3. Once softened, reduce the heat to medium low, and saute until the onions are browned and caramelized. This takes about 25 minutes.

  4. While the onions are cooking, prepare the 90 second bread in square containers. Cut each slice in half to form a total of 4 slices of bread.

  5. Place the bread on a parchment lined baking sheet.

  6. Melt the remaining butter, and brush over the bread.

  7. Sprinkle the bread with the garlic powder.

  8. Place the bread under the broiler until toasted, and then cut into cubes.

  9. Once the onions are done, add in the garlic and thyme, and saute for 30 seconds.

  10. Pour in the white cooking wine to deglaze the pot.

  11. Stir in the beef broth and salt and pepper to taste.

Recipe Notes

Calories: 392
Net Carbs:6 Net Carbs Per Serving

The nutritional information for this recipe is calculated as a courtesy and is an approximate only. I cannot guarantee the accuracy of the nutritional information for any recipes on this site.

Keto Soup Recipes

If you enjoyed this keto French onion soup recipe, then you should try these low-carb recipes next. They are perfect on a cold day or before your favorite meal.

  • Keto Bacon Cheeseburger Soup
  • Keto Chicken Alfredo Soup
  • Low-Carb Creamy Tomato Bacon Soup
  • Keto Jalapeno Popper Soup
  • Creamy Keto Chicken Noodle Soup

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Keto French Onion Soup - Easy To Make Recipe (2024)

FAQs

How many carbs are in keto French onion soup? ›

All told, you can have a generous portion of this Keto French Onion Soup, complete with the topper and cheese and still come in at 10g net carbs.

Why avoid onions on keto? ›

Onions are typically considered “keto-friendly,” but they aren't suitable in large volumes. All types of onions contain carbohydrates. The starches and sugars in onions could potentially push you over your daily net carb limit and bring you out of ketosis.

What is the difference between onion soup and French 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 is a good substitute for cheese in French onion soup? ›

Key Ingredients & Substitutions

Cheese: To me, there is no better cheese in a French onion soup than Gruyere! However, shredded Swiss or provolone also works very well. Just be sure to find something that is easily shredded or grated, as that's what will give you that amazing gooey, melty cheese we all love.

What soup can you eat on keto? ›

These cozy soup recipes are seriously indulgent, but they're all keto-friendly.
  • Low-Carb Chicken Pot Pie Soup. ...
  • Creamy Roasted Garlic and Mushroom Soup with Bacon. ...
  • One-Pot Creamy Meatball Soup. ...
  • Vegetable Soup. ...
  • 30-Minute Roasted Garlic Cauliflower Chowder. ...
  • Low Carb Lasagna Soup. ...
  • Instant Pot Keto Stuffed Pepper Soup.
Dec 2, 2022

What onion is best on keto? ›

Green onions (or scallions) are the most keto-friendly variety of onion. There are only 1.2 grams of net carbohydrates in ¼ cup of chopped green onions.

What vegetables are not keto friendly? ›

- Starchy Vegetables: Potatoes, peas, sweet potatoes, yams, corn, cassava, artichoke, etc. - Refined Carbs: Bread, pasta, pastries, tortilla, sandwich, etc. Due to the high-carb content of these food items, they are not keto-friendly.

Is garlic ok on keto? ›

Fresh garlic is keto-friendly when used as a spice either raw or cooked. According to the USDA FoodData Central Database, one garlic clove (3g) has 0.992 grams of total carbohydrates and 0.063 grams of fiber. That gives one fresh garlic clove just 0.929 net carbs.

Which fruit is keto-friendly? ›

Keto fruits by definition are low in carbohydrates. You still need to exercise portion control with most keto-friendly fruits to be within the limits of a keto diet. Keto-friendly fruits include avocados, watermelon, strawberries, lemons, tomatoes, raspberries, peaches, cantaloupe, star fruit, and blackberries.

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 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.)

How can I thicken my French onion soup? ›

The easiest way to thicken your French onion soup is with flour. You can also use cornstarch if you don't have any flour. Remember to never add the flour or cornstarch directly to the soup – otherwise you run the risk of it clumping.

Why do French people eat French 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

Can I use mozzarella instead of Gruyère in French onion soup? ›

Combine 1 ½ cups of shredded Gruyère, 1 ½ cups of shredded Mozzarella, and ½ cup shredded Parmesan in a bowl. This is my favorite combination of cheeses, but you can use whichever cheeses you have on hand.

How many carbs are in a bowl of French onion soup? ›

Red Robin Ca French Onion Soup (bowl) (1 bowl) contains 41g total carbs, 27g net carbs, 23g fat, 15g protein, and 410 calories.

How many carbs are in the French onion soup at Panera? ›

Nutrition & Allergens
Nutrition InformationValue
Carbohydrates33 g
Dietary Fiber3 g
Total Sugars16 g
Protein10 g
8 more rows

Is onion soup mix high in carbs? ›

Lipton Dry Onion Soup Mix (0.25 pouch) contains 5g total carbs, 4g net carbs, 0g fat, 1g protein, and 20 calories.

How many net carbs are in onions on keto diet? ›

If you don't have a sensitivity to onions, you may be wondering if they are keto or not. The answer is they can be, in moderation. Sweet onions contain 6.65g of net carbs per 100g. Yellow onions have 5.9g, white onions have 6.48g, and red onions have 5.96g of net carbs per 100g.

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