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Traditional Onion Soup: A Comforting Classic for Dinner

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A classic comforting onion soup made with slowly caramelized onions in a rich savory broth, topped with toasted bread and melted cheese.

  • Author: Sophia
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Total Time: 65 minutes
  • Yield: 4 servings
  • Category: Soup
  • Method: Stovetop
  • Cuisine: French
  • Diet: Halal

Ingredients

  • 4 large yellow onions, thinly sliced
  • 3 tablespoons olive oil
  • 2 tablespoons unsalted butter
  • 3 cloves garlic, minced
  • 1 teaspoon sugar
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 teaspoon dried thyme
  • 1 bay leaf
  • 6 cups beef or vegetable broth
  • 1 tablespoon all-purpose flour
  • 1/2 cup water
  • 1 baguette, sliced
  • 1 cup shredded mozzarella or Swiss cheese

Instructions

  1. Heat olive oil and butter in a large pot over medium heat.
  2. Add sliced onions and cook slowly for 25–30 minutes, stirring frequently until caramelized.
  3. Add garlic and cook for 1 minute.
  4. Stir in sugar, salt, pepper, thyme, and bay leaf.
  5. Sprinkle flour over onions and cook for 2 minutes, stirring continuously.
  6. Gradually add broth while stirring, then add water and bring to a boil.
  7. Reduce heat and simmer uncovered for 20 minutes.
  8. Toast baguette slices until golden.
  9. Ladle soup into oven-safe bowls, top with bread and cheese.
  10. Broil until cheese is melted and bubbly.
  11. Serve hot.

Notes

  • Caramelizing onions slowly is key to deep flavor.
  • Use low-sodium broth to control salt levels.
  • Vegetable broth can be used for a vegetarian version.
  • Add a splash of balsamic vinegar for extra depth.
  • Store without bread and cheese for best reheating results.

Nutrition

Find it online: https://savorymomskitchen.com/traditional-onion-soup-a-comforting-classic-for-dinner/