Keto French Onion Soup
This Keto French Onion Soup brings the rich, savory flavors of traditional French onion soup with none of the carbs. Made with caramelized onions, beef bone broth, and topped with melted Gruyère cheese, it’s a keto-friendly, low-carb comfort food that’s perfect for those looking to indulge without the guilt. A warm, flavorful bowl for anyone on a keto or low-carb diet!
- Prep Time: 10 minutes
- Cook Time: 1 hour (includes caramelizing onions and simmering the soup)
- Total Time: 1 hour 10 minutes
- Yield: 6 servings
- Category: Soup, Comfort Food
- Method: Stovetop, Broiler
- Cuisine: French, Keto
- Diet: Low Calorie
Ingredients
2.5 lb Yellow onions, sliced thinly
2 tbsp Unsalted butter
5 1/2 cups Beef bone broth
4 cloves Garlic, minced
1 tbsp Fresh thyme
1/4 cup Dry white wine
2 medium Bay leaves
6 slices Keto 90-second bread (triple the recipe)
6 oz Gruyère cheese, shredded
Instructions
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Caramelize the onions: In a large pot, melt butter over medium heat. Add sliced onions and cook, stirring occasionally, for 40–45 minutes until they are soft and caramelized. Stir occasionally to prevent burning.
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Add garlic and thyme: Once onions are caramelized, add minced garlic and thyme. Stir and cook for 1–2 minutes until fragrant.
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Deglaze with wine: Pour in dry white wine, scraping up bits from the bottom of the pot. Let the wine simmer and reduce by half (~3–4 minutes).
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Add broth and bay leaves: Add beef bone broth and bay leaves. Bring to a simmer and cook for 20–30 minutes to allow the flavors to meld. Remove bay leaves before serving.
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Prepare keto bread: While the soup simmers, toast or bake keto 90-second bread slices until golden and firm.
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Assemble the soup: Ladle soup into oven-safe bowls. Place a slice of keto bread on top of each bowl and sprinkle generously with shredded Gruyère cheese.
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Melt the cheese: Place bowls under the broiler for 2–3 minutes until the cheese is melted and bubbly, forming a golden crust.
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Serve: Carefully remove from the oven and serve immediately.
Notes
Dairy-Free: Use dairy-free cheese or omit cheese for a lighter version of the soup.
Vegetarian: Swap beef bone broth for vegetable broth to make the soup vegetarian.
Herb Variations: Add rosemary or sage for an alternative flavor profile.
Onion Variety: A mix of yellow, red, and white onions can offer a different taste.
Spicy Kick: Add a splash of sherry vinegar or a pinch of red pepper flakes for a little heat.
Find it online: https://justsosavory.com/keto-french-onion-soup/
