French onion soup au gratin
French soup with golden onions and broth, topped with toasted bread and gratinéed cheese. Serves 4.
The onions cook slowly until tender and golden; a little flour then thickens the broth. Toasted bread and gratinéed cheese complete this classic French version.
Ingredient allergens
Allergen listThere are no verified associations for these ingredients yet.
Method
- 01
Prepare the onions
Peel the onions and cut them into thin slices.
Ready to continue when: The slices are thin and similar in thickness.
15 min - 02
Brown the onions
Melt the butter in a pot over low heat. Add the onions and cook, stirring often, until tender and golden.
Ready to continue when: The onions are soft and golden, with no burnt edges.
30 min - 03
Stir in the flour
Sprinkle the flour over the onions and stir for 1 minute.
Ready to continue when: The flour is evenly mixed in and no longer looks dry on the onions.
1 min - 04
Simmer the soup
Pour in the stock gradually, stirring to incorporate the flour. Bring to a boil, then cover the pot and simmer gently for 30 minutes.
Ready to continue when: The soup has simmered gently and the broth looks thickened, with no flour lumps.
30 min - 05
Gratinate and serve
Divide the soup among oven-safe bowls. Place one slice of bread in each bowl, sprinkle the grated cheese on top, and gratinate until the cheese is melted and golden.
Ready to continue when: The cheese on top is melted, bubbling, and golden.
Ingredients
Sources and review
Content researched, cross-checked and automatically validated. Sources consulted:
- Bogotá - Wikipedia, la enciclopedia libre es.wikipedia.org/wiki/Bogot%C3%A1
- Para la ciudadanía www.aesan.gob.es/para-la-ciudadania
- Receta de sopa de cebolla francesa auténtica — diegodoal diegodoal.com/recetas/sopa-cebolla
- - YouTube www.youtube.com/watch?v=vmQKZbVYhVY
- Sopa de Cebolla Tradicional (Receta Francesa Fácil y Deliciosa) www.piloncilloyvainilla.com/sopa-de-cebolla-vegana/
- Sopa de cebolla francesa - Cravings Journal es.cravingsjournal.com/sopa-de-cebolla-francesa/
- Sopa de cebolla francesa | Taste France Magazine www.tastefrance.com/es/recetas/clasicos-franceses/sopa-de-cebolla-francesa
- Sopa de cebolla gratinada saboresymomentos.es/sopa-de-cebolla-gratinada-receta-tradicional-francesa/
- Sopa de cebolla gratinada - Recetas de Miriam García / El invitado de invierno invitadoinvierno.com/sopa-de-cebolla-gratinada/
- Sopa de cebolla: Receta francesa del mes - Colegio Lycée français Molière de Zaragoza lyceemolieresaragosse.org/sopa-de-cebolla-receta/
- Sopa de cebolla francesa | Sous Vide Cooking www.sous-vide.cooking/es/sopa-de-cebolla-francesa/
- Prácticas alimentarias y condiciones de salud en la región de Orizaba. Aproximaciones antropológicas | OpenAlex openalex.org/W2269514200
- Sopa de cebolla gratinada, una deliciosa receta tradicional francesa www.eladerezo.com/recetas/sopa-de-cebolla.html
- Sopa De Cebolla Gratinada. Soupe à L'oignon - Cocina Francia cocinafrancia.com/2021/10/28/sopa-de-cebolla/
State: Published after documentary validation; no “Tested” label is shown.