Soupe 'A Loignon(Onion Soup)
A classic French onion soup featuring caramelized onions in a rich beef broth, topped with toasted bread and melted cheeses. This comforting dish offers deep savory flavors with a hint of sweetness from the onions, perfect for cozy gatherings and cheese lovers alike.
Ingredients
Instructions
- In a heavy pot, melt the butter over medium heat.
- Add the sliced onions and cook slowly, stirring occasionally, until golden brown.
- Sprinkle the flour over the onions and stir for a few minutes, seasoning with salt and freshly ground pepper.
- Add the beef broth and white wine, stirring constantly.
- Bring the mixture to a boil.
- Lower the heat and let the soup simmer for 30 minutes, partly covered.
Tips & Substitutions
For a richer flavor, consider using a combination of beef broth and chicken broth. If you prefer a vegetarian option, substitute the beef broth with vegetable broth and use a plant-based cheese. To enhance the sweetness of the onions, you can add a teaspoon of sugar while they cook. Ensure to stir the onions frequently to prevent burning and to achieve that deep golden color.
Serving Suggestions
Serve the soup hot in oven-safe bowls, topped with the toasted French bread and a generous sprinkle of both Parmesan and Swiss cheese, then broil until bubbly and golden. This dish pairs beautifully with a crisp green salad or a side of roasted vegetables. For a heartier meal, consider serving it alongside a classic like Sensational Beef Stroganoff.
Storage & Reheating
Store any leftover soup in an airtight container in the refrigerator for up to 3 days. When reheating, do so gently on the stove over low heat, adding a splash of water or broth to loosen the soup if it thickens. Avoid microwaving, as it can alter the texture of the onions and cheese.
Nutrition & Diet Analysis (per serving)
Each serving of Soupe 'A Loignon(Onion Soup) contains roughly 1445 calories, with 34g protein, 236g carbohydrates, and 38g fat. It is an excellent source of iron (99% of the Daily Value), dietary fiber (95% of the Daily Value), and protein (67% of the Daily Value). Note that it is relatively high in sodium, at 2296mg per serving (100% of the Daily Value).
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Frequently Asked Questions
Can I make this soup ahead of time?
Absolutely! This onion soup can be made ahead and actually tastes better the next day as the flavors meld. Just cool it completely before refrigerating. When ready to serve, reheat and top with cheese and bread just before broiling.
What type of onions work best for this recipe?
Yellow onions are traditional for French onion soup due to their natural sweetness when caramelized. However, you can also use sweet onions like Vidalia for a milder flavor or even a mix of onions for added depth.
Can I freeze the soup?
Yes, you can freeze the soup before adding the bread and cheese. Just cool it completely, then transfer to freezer-safe containers. When ready to eat, thaw in the refrigerator overnight and reheat gently, then add the toppings.
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).