Classic French Onion Soup
Classic French Onion Soup, or Soupe à l'Oignon Gratinée, is a rich, savory soup originating from France, centered on deeply caramelized onions simmered in a flavorful beef broth. It is traditionally topped with a slice of crusty bread and a generous layer of melted, bubbly Gruyère cheese, creating a satisfying and aromatic dish.
🍽️ Nutrition at a glance
This soup is generally high in fat and sodium due to the butter used for caramelizing onions, the rich broth, and the generous cheese topping, with a moderate amount of protein from the cheese and broth. A typical serving can range from 350 to 500 calories, providing nutrients like calcium, vitamin C from the onions, and iron from the broth.
Nutrition breakdown
| Calories | 310 kcal |
| Protein | 12 g |
| Carbs | 25 g |
| Fat | 18 g |
| Fiber | 2 g |
| Sugar | 5 g |
| Sodium | 980 mg |
| Calcium | 280 mg |
| Iron | 2.5 mg |
| Potassium | 350 mg |
| Vitamin A | 120 µg RAE |
| Vitamin C | 6 mg |
| Vitamin B12 | 0.8 µg |
| Phosphorus | 180 mg |
| Selenium | 12 µg |
Per 1 cup (245 g) · estimated, varies by recipe
💡 What's interesting
Culturally, it's a beloved bistro classic in France, often enjoyed as a hearty starter or light main. Nutritionally, the long cooking process of the onions transforms their natural sugars, creating a deep, complex flavor without added sugar, while the cheese provides a satisfying, protein-rich finish.
