Classic French Onion Soup

French onion soup is one of the most iconic and comforting dishes in French cuisine. Made with slowly caramelized French onions, this classic soup embodies the essence of rustic French home cooking. 

While onion soup originated in Lyon, the gratinéed version, the onion soup au gratin, is typically Parisian. Also called gratinée des Halles, it was an early-morning staple for seasoned night owls around Les Halles Baltard, the historic central Paris food market, demolished in the 1970s. Over time, it evolved into the indulgent version we know today, topped with toasted bread and melted cheese. This dish is now a classic of French gastronomy, celebrated in French homes and bistros across the country. For a modern twist, the rich flavors of French onion soup can even be enjoyed in a French Onion Soup Burger, bringing the classic taste to a handheld meal.

Using high-quality French ingredients is key to achieving authentic flavor. For the cheese, French Gruyère, Comté PDO or Emmental de Savoie PGI all melt beautifully, creating a rich, bubbling topping. For the onions, varieties such as Oignon de Roscoff PDO from Britanny or Oignon des Cévennes PDO provide the ideal balance of sweetness and depth, ensuring a perfectly caramelized base for this timeless French soup.