French Onion Soup with Gruyere Cheese

    2 hours 10 minutes

    This is a great recipe for French onion soup, the trick is using butter and the long cook time of the onions to maximise the flavour.

    5 people made this

    Serves: 4 

    • 60g butter
    • 500g onions, sliced
    • 1 clove garlic, crushed
    • 1 teaspoon plain flour
    • 1 litre beef stock
    • 60g Gruyere cheese, grated
    • 1 teaspoon dry English mustard
    • 4 slices French bread
    • salt and freshly ground black pepper, to taste

    Preparation:25min  ›  Cook:1hour45min  ›  Ready in:2hours10min 

    1. Melt the butter in a large heavy saucepan and slowly brown the onions. This should take about 1 hour and the onions will become super soft and greatly reduced in quantity. Add the garlic after 45 minutes.
    2. Stir in the flour and cook for 1 minute. Add the stock, salt and pepper then stir until boiling then simmer for 20-30 minutes.
    3. Preheat the oven to 200 degrees C.
    4. Mix the Gruyere with the mustard and pepper. Spread this on the bread slices and place them on the bottom of an earthenware tureen or baking dish.
    5. Pour over the soup. The bread will rise to the top. Place in the oven until well browned and bubbling.

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    Reviews in English (4)


    I am sorry to say that this was not my favorite French Onion Soup recipe. My husband thought that it was really good hence the 4 stars. I just thought that it was kind of flat. Thanks so much for posting the recipe.  -  06 Aug 2012  (Review from Allrecipes UK & Ireland)


    So lovely and easy!  -  15 Dec 2013  (Review from Allrecipes UK & Ireland)


    Really good, everyone loved it :-)  -  05 Mar 2015  (Review from Allrecipes UK & Ireland)