Onion Soup

Servings: 4 Difficulty: Advanced
Classic French onion soup with caramelized onions, rich beef broth, and a golden Gruyre-crusted bread topping.
Onion Soup recipe image

Onion Soup

Difficulty: Advanced
Servings: 4 Calories: 1139.2

Description

This classic French onion soup offers a deeply savory and comforting experience, defined by the slow caramelization of sweet onions in a rich beef broth. The base is thickened slightly with flour for a luxurious mouthfeel, while the traditional topping of toasted bread and melted Swiss and Parmesan cheeses creates a bubbly, golden crust that contrasts beautifully with the hot, aromatic soup below. It is the perfect dish for chilly evenings or as a hearty starter to a larger meal. The combination of earthy beef stock, sweet onions, and nutty cheese provides a robust flavor profile that feels both rustic and elegant. Simple ingredients transform into a sophisticated centerpiece, making this a timeless favorite for home cooks seeking warmth and depth in every spoonful.

Ingredients

Directions

  1. Preheat the oven to 350F (175C).
  2. In a 4-quart Dutch oven or large saucepan, heat the corn oil over medium-high heat.
  3. Add the thinly sliced onions and finely chopped garlic to the pan.
  4. Cook, stirring occasionally, for 10 minutes or until the onions are transparent and tender.
  5. Stir in the all-purpose flour and continue to cook, stirring constantly, for 10 minutes longer or until the mixture turns a light brown color without burning.
  6. Gradually stir in the beef broth, salt, and freshly ground pepper.
  7. Cover the pan and let the soup simmer for 25 minutes, stirring occasionally.
  8. Meanwhile, toast the slices of French loaf bread until golden.
  9. Place 4 ovenproof bowls or small crocks on a jelly roll pan.
  10. Ladle 1 cup of the hot soup into each bowl.
  11. Sprinkle a small amount of grated Parmesan cheese over the surface of the soup in each bowl.
  12. Top each bowl with a slice of toasted bread.
  13. Sprinkle the shredded Swiss cheese evenly over the bread, then sprinkle the remaining Parmesan cheese on top.
  14. Bake in the preheated oven for 20 minutes or until the cheese is melted, bubbly, and begins to brown.
  15. Serve immediately while hot.

Nutrition Facts

Servings 4


Amount Per Serving
Calories 1139.2kcal
% Daily Value *
Total Fat 65.3g101%
Saturated Fat 28.0g140%
Cholesterol 292.6mg98%
Sodium 3486.3mg146%
Total Carbohydrate 37.7g13%
Dietary Fiber 8.5g34%
Sugars 9.4g
Protein 100.1g201%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.

Note

The original recipe listed some ingredients without names; based on standard French Onion Soup preparation and the context of the directions, these have been identified as Grated Parmesan Cheese (1/3 cup) and Shredded Swiss Cheese (1/2 cup).

For deeper flavor, you can caramelize the onions slowly over low heat for 45-60 minutes until they are deep golden brown, rather than just transparent.

Ensure your serving bowls are ovenproof before placing them in the oven to melt the cheese.

Leftover soup (without the bread and cheese topping) can be stored in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stove.

Keywords: onion soup, french onion soup, beef broth, caramelized onions, gruyere, swiss cheese, parmesan, toasted bread, comfort food, winter soup, cheesy, savory, dinner, appetizer
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