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.
Melt the butter in a large, heavy-bottomed pot over medium heat.
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.
Stir in the minced garlic and cook for another 2 minutes until fragrant.
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.
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.
While the soup simmers, steam the cauliflower florets until tender but not mushy, about 8-10 minutes. Set aside.
Preheat your oven to 400°F (200°C).
Remove the thyme sprigs and bay leaf from the soup. Taste and adjust seasoning if needed.
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.
Top each bowl with a generous portion of shredded Gruyère cheese and a sprinkle of Parmesan cheese.
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.
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!
Calories |
2061 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 137.6 g | 176% | |
| Saturated Fat | 78.4 g | 392% | |
| Polyunsaturated Fat | 0.1 g | ||
| Cholesterol | 404 mg | 135% | |
| Sodium | 10217 mg | 444% | |
| Total Carbohydrate | 97.2 g | 35% | |
| Dietary Fiber | 23.7 g | 85% | |
| Total Sugars | 35.2 g | ||
| Protein | 116.0 g | 232% | |
| Vitamin D | 1.2 mcg | 6% | |
| Calcium | 3007 mg | 231% | |
| Iron | 8.1 mg | 45% | |
| Potassium | 3786 mg | 81% | |
*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.