Onion Sauce

    35 minutes

    Onion sauce is great for most meats and over vegetables. It is a traditional white sauce base with onion and Dijon mustard.

    10 people made this

    Serves: 6 

    • 1 large onion, diced, end reserved
    • 1 cup (250ml) milk
    • 1 teaspoon Dijon mustard
    • 30g butter
    • 1 tablespoon cornflour
    • 1 pinch salt and pepper, to taste

    Preparation:5min  ›  Cook:30min  ›  Ready in:35min 

    1. Add onion to a saucepan of boiling water and boil on a moderate heat for approximately 15 minutes to soften slightly.
    2. Melt the butter in a saucepan then add the cornflour and stir into a thick 'paste'.
    3. Slowly add the milk a little at a time stirring continually to combine with the 'paste'.
    4. When the onions are cooked add them to this white sauce. Add the Dijon mustard, black pepper and salt, to taste. Turn down heat and continually stir until sauce thickens.
    5. Remove saucepan from heat and grate the remaining onion into the sauce this will give it a stronger flavour.

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    Reviews in English (7)


    Very nice, even my teenage son liked it!  -  15 Jul 2012


    Something else. Stir in the Dijon mustard to taste at the end.  -  07 Feb 2011  (Review from Allrecipes UK & Ireland)


    This is an excellent recipe. The addition of mustard makes all the difference. I didn't have and Dijon mustard so had to use English instead. It was easy to make and tasted wonderful on a home made toad in the hole. Very moreish?  -  21 Feb 2013  (Review from Allrecipes UK & Ireland)