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Classic French Onion Soup Recipe

Classic French Onion Soup Recipe


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4.8 from 28 reviews

  • Total Time: 1 hour 10 minutes
  • Yield: 4 1x

Description

Savory Classic French Onion Soup whispers comfort from French kitchens, beckoning with rich caramelized onions and melted Gruyère cheese. Hearty broth and crusty bread create a sublime dining experience you’ll crave again and again.


Ingredients

Scale

Main Ingredients:

  • 4 large onions, thinly sliced
  • 4 cups beef broth
  • 1 cup dry white wine
  • 8 slices French bread
  • 1.5 cups Gruyere cheese, grated

Cooking Fats and Oils:

  • 4 tablespoons unsalted butter
  • 1 tablespoon olive oil

Seasonings and Garnish:

  • 1 teaspoon sugar
  • 1 teaspoon thyme (dried or fresh)
  • Salt and pepper, to taste
  • Fresh parsley, for garnish (optional)

Instructions

  1. Initiate the caramelization process in a large pot by gently melting butter and olive oil over medium heat. Incorporate sliced onions, sprinkle sugar, and add a delicate pinch of salt. Slowly transform the onions through consistent stirring, allowing them to develop a deep golden-brown color and rich caramelized texture over 30-40 minutes.
  2. Enhance the soup’s complexity by introducing beef broth and white wine. Infuse with fragrant thyme and season with salt and pepper. Elevate the liquid to a boil, then reduce to a gentle simmer for 20 minutes, enabling the flavors to harmonize and intensify.
  3. Prepare bread accompaniment by heating the oven to 400F (200C). Arrange French bread slices on a baking sheet, transforming them into crisp, golden toast through a 5-7 minute roasting process.
  4. Carefully distribute the aromatic soup into heat-resistant bowls. Crown each serving with a perfectly toasted bread slice, then lavishly blanket with freshly grated Gruyere cheese.
  5. Position the cheese-topped bowls on a baking sheet. Position under the broiler for 2-3 minutes, watching intently as the cheese melts into a bubbling, golden landscape.
  6. Optionally garnish with fresh parsley, then present the soup immediately while piping hot, inviting diners to experience the rich, layered flavors.

Notes

  • Caramelize onions slowly to develop deep, rich flavor without burning, stirring occasionally and adjusting heat as needed.
  • Use sweet onions like Vidalia for enhanced natural sweetness and smoother caramelization process.
  • Consider adding a splash of balsamic vinegar during onion cooking to boost depth and complexity of flavor profile.
  • For gluten-free version, replace traditional French bread with gluten-free bread or omit bread entirely and focus on cheesy, savory soup base.
  • Prep Time: 10 minutes
  • Cook Time: 1 hour
  • Category: Dinner, Appetizer
  • Method: Simmering
  • Cuisine: French

Nutrition

  • Serving Size: 4
  • Calories: 350
  • Sugar: 4 g
  • Sodium: 800 mg
  • Fat: 18 g
  • Saturated Fat: 10 g
  • Unsaturated Fat: 6 g
  • Trans Fat: 0 g
  • Carbohydrates: 36 g
  • Fiber: 2 g
  • Protein: 12 g
  • Cholesterol: 40 mg