Caramelized Onion Soup Au Gratin Low Carb but You Won T Notice

Indulge in a comforting bowl of *Caramelized Onion Soup Au Gratin* with a low-carb twist you’ll barely notice. This rich and savory soup features perfectly caramelized onions, aromatic garlic, and a splash of dry white wine for depth, all simmered in fragrant beef broth with fresh thyme and a hint of bay leaf. Steamed cauliflower florets take the place of traditional croutons, keeping it keto-friendly while adding a subtle nuttiness. Topped with a luscious layer of melted Gruyère and Parmesan cheese, then broiled to golden perfection, each spoonful offers a satisfying blend of flavors and textures. Ready in just over an hour, this low-carb French onion soup is a showstopper that feels indulgent yet fits your healthy lifestyle. Ideal for cozy nights, special occasions, or when you simply crave gourmet flavors without compromise.

Nutriscore Rating: 65/100

Prep Time:15 mins

Cook Time:65 mins

Total Time:80 mins

Servings: 4

Ingredients

• 4 tablespoons unsalted butter
• 4 large yellow onions
• 1 teaspoon salt
• 0.5 teaspoon ground black pepper
• 4 cloves garlic cloves, minced
• 0.5 cup dry white wine
• 6 cups beef broth
• 4 sprigs fresh thyme
• 1 leaf bay leaf
• 1 head cauliflower, cut into small florets
• 2 cups Gruyère cheese, shredded
• 0.5 cup Parmesan cheese, grated

Directions

Step 1

Melt the butter in a large, heavy-bottomed pot over medium heat.

Step 2

Peel and thinly slice the yellow onions. Add them to the pot along with the salt and pepper, and sauté for about 25-30 minutes, stirring occasionally, until the onions are golden brown and fully caramelized.

Step 3

Stir in the minced garlic and cook for another 2 minutes until fragrant.

Step 4

Deglaze the pot with the dry white wine, scraping up any browned bits from the bottom. Let the wine reduce to half its volume, approximately 5 minutes.

Step 5

Add the beef broth, thyme sprigs, and bay leaf to the pot. Bring the mixture to a boil, then reduce the heat and simmer for 20 minutes.

Step 6

While the soup simmers, steam the cauliflower florets until tender but not mushy, about 8-10 minutes. Set aside.

Step 7

Preheat your oven to 400°F (200°C).

Step 8

Remove the thyme sprigs and bay leaf from the soup. Taste and adjust seasoning if needed.

Step 9

Ladle the soup into oven-safe ramekins or bowls. Add a few cauliflower florets to each bowl as a low-carb alternative to bread croutons.

Step 10

Top each bowl with a generous portion of shredded Gruyère cheese and a sprinkle of Parmesan cheese.

Step 11

Place the bowls on a baking sheet for easy handling and bake in the preheated oven for 10-12 minutes, or until the cheese is bubbly and golden brown.

Step 12

Carefully remove the hot bowls from the oven and let cool slightly before serving. Garnish with a sprig of fresh thyme if desired, and enjoy your low-carb Caramelized Onion Soup Au Gratin!

Nutrition Facts

Serving size	(3102.0g)

Amount per serving	% Daily Value*
Calories	2061.1

Total Fat 137.6g	0%
Saturated Fat 78.4g	0%
Polyunsaturated Fat 0.1g
Cholesterol 404.0mg	0%
Sodium 10216.8mg	0%
Total Carbohydrate 97.2g	0%
Dietary Fiber 23.7g	0%
Total Sugars 35.2g
Protein 116.0g	0%

Vitamin D 48.0IU	0%
Calcium 3007.4mg	0%
Iron 8.1mg	0%
Potassium 3785.7mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 59.2%

Protein: 22.2%

Carbs: 18.6%