French onion soup

French onion soup
Preparation time
15 mins
Cooking time
1 hr and 10 mins
Servings
4
Difficulty
Medium
Category Soups Meal type Appetizer, Dinner, Light meal, Lunch Cuisine French Cooking method Stovetop Dietary Vegetarian Season Fall, Winter Tags French Cuisine, Classic Soup, Comfort food, Caramelized Onions
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French Onion Soup (Soupe à l'Oignon Gratinée) is a beloved classic of French cuisine, known for its rich, deep flavor. The key to its taste lies in slow-caramelized onions, which bring out their natural sweetness, balanced by a savory beef or vegetable broth. Topped with crisp baguette slices and melted Gruyère cheese, this soup is a warm and comforting dish perfect for cold days. It originated in France as a peasant dish, later gaining popularity in fine dining restaurants worldwide.

Ingredients

For the soup

For the topping

Nutrition facts per 100g

  • Calories: 70–90 kcal
  • Protein: 2–3 g
  • Total Fat: 3–5 g
    • Saturated Fat: 1–2 g
    • Trans Fat: 0 g
  • Cholesterol: 5–10 mg
  • Sodium: 250–400 mg
  • Total Carbohydrates: 8–12 g
    • Dietary Fiber: 1–2 g
    • Sugars: 3–5 g
  • Vitamin C: 3–6 mg
  • Vitamin D: 5–10 IU
  • Iron: 0.5–1 mg
  • Calcium: 50–100 mg
  • Potassium: 150–200 mg
  • Phosphorus: 80–120 mg

Recipe instructions

Caramelize the onions

Deglaze and simmer

Prepare the toasts

Assemble and Broil

Serve