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This classic soup features deeply sweet caramelized onions swimming in a rich, savory beef broth. Topped with a crusty baguette slice and a blanket of melted Gruyère cheese, it's the ultimate comfort in a bowl.
For 4 servings
Caramelize the Onions (50-60 minutes)
Build the Soup Base (5 minutes)
Simmer the Soup (20-30 minutes)
This classic soup features deeply sweet caramelized onions swimming in a rich, savory beef broth. Topped with a crusty baguette slice and a blanket of melted Gruyère cheese, it's the ultimate comfort in a bowl.
This french recipe takes 95 minutes to prepare and yields 4 servings. At 643.82 calories per serving with 25.6g of protein, it's a moderately challenging recipe perfect for lunch or dinner or appetizer or supper.
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Assemble and Broil (5 minutes)
For a vegetarian version, use a rich mushroom or vegetable broth instead of beef broth. Add 1 tbsp of soy sauce or 1 tsp of miso paste to the broth for extra umami depth. For a vegan version, also use vegan butter and a plant-based cheese alternative.
While Gruyère is classic, you can substitute with other great melting cheeses like Comté, Emmental, Jarlsberg, or a mix of provolone and Parmesan.
For an even richer, restaurant-quality flavor, add a splash of dry sherry, port, or Madeira along with the brandy or cognac at the end of simmering.
To make this gluten-free, use a gluten-free all-purpose flour blend and top with gluten-free bread or croutons.
Onions are an excellent source of quercetin, a powerful flavonoid antioxidant that helps combat inflammation, reduce allergy symptoms, and protect against chronic diseases.
The prebiotic fibers in onions, such as inulin and fructooligosaccharides, act as food for beneficial gut bacteria, promoting a healthy digestive system and improving nutrient absorption.
When made with traditional, slow-simmered beef bone broth, this soup can be a good source of collagen and gelatin, which support the health of your joints, skin, hair, and nails.
A typical serving of this French Onion Soup contains approximately 480-580 calories, depending largely on the amount of cheese and the thickness of the baguette used.
French Onion Soup is a rich and indulgent dish. While onions themselves offer health benefits like antioxidants and prebiotics, the soup is often high in sodium from the broth and saturated fat from the butter and cheese. It is best enjoyed in moderation as a comforting treat.
Yellow onions are the classic choice because they strike a perfect balance between sweetness and a savory, pungent flavor when caramelized. Sweet onions like Vidalia can also be used, but they will result in a noticeably sweeter soup.
Yes, the soup base (without the bread and cheese) can be made up to 3 days in advance and stored in the refrigerator. The flavor often improves overnight. Reheat the soup gently on the stovetop before proceeding with the assembly and broiling step.
Bitterness can occur if the onions are cooked too quickly over high heat, causing them to burn instead of caramelize. It's crucial to use low, gentle heat and stir patiently to achieve a sweet, deep brown color.
If you prefer not to use wine, you can deglaze the pot with an equal amount of beef broth or even a tablespoon of balsamic vinegar mixed with water to help lift the flavorful bits from the bottom of the pot.
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