Ultimate onion tart

Ultimate onion tart

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(24 ratings)

Prep: 15 mins Cook: 1 hr

More effort

Serves 6
This simple quiche is a classic veggie favourite

Nutrition and extra info

  • Vegetarian

Nutrition: per serving

  • kcal623
  • fat50g
  • saturates26g
  • carbs35g
  • sugars0g
  • fibre3g
  • protein10g
  • salt0.59g
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  • 300g shortcrust pastry, thawed if frozen
  • 25g butter



    Butter is made when lactic-acid producing bacteria are added to cream and churned to make an…

  • 2 tbsp olive oil
    olive oil

    Olive oil

    ol-iv oyl

    Probably the most widely-used oil in cooking, olive oil is pressed from fresh olives. It's…

  • 900g onion, halved and thinly sliced



    Onions are endlessly versatile and an essential ingredient in countless recipes. Native to Asia…

  • 2 medium eggs



    The ultimate convenience food, eggs are powerhouses of nutrition, packed with protein and a…

  • 300ml double cream
  • 40g vegetarian parmesan -style cheese, grated



    Parmesan is a straw-coloured hard cheese with a natural yellow rind and rich, fruity flavour. It…


  1. Heat oven to 190C/fan 170C/gas 5. Roll out the pastry on a lightly floured surface and use to line a deep 23cm fluted flan tin. Line with baking paper and fill with baking beans. Bake blind for 15 mins.

  2. Heat the butter and oil in a large frying pan, then gently fry the onions, covered, for about 30 mins until completely softened, but still pale in colour.

  3. Beat the eggs and cream together in a bowl, then add the cheese and some seasoning. Stir in the onions, then spoon the mixture into the flan case. Bake for 25-30 mins until lightly set and browned.

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Comments, questions and tips

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30th Jan, 2013
Made a double batch, but using shop bought pastry. I really liked this dish, husband thought it was a bit sweet, but nothing left on guests plates. So guess it was a hit. I will be making it again, may even try a little blue cheese.
8th Jan, 2013
Gorgeous! Creamy and tender and so beautiful with a golden brown top! Was lovely the next day too and I'll remember to make it for a picnic when summer comes around again! My veggie friends loved it when I made individual versions for them as a dinner party main course - gratifyingly easy!
24th Dec, 2012
Delicious will be making again.
4th Nov, 2012
Made this with one red and one white onion, no cream, just semi-skimmed milk, 3 eggs to 1/2 pint milk, made my own potato pastry for a tasty gluten free vegitarian quiche - lovely.
kerrylread's picture
12th Jul, 2014
Thank you, perfect suggestion.
ninotchka's picture
3rd Aug, 2011
Absolutely adorable!!! It was devoured in a few minutes at a party.... I did add more salt and decided to put some nutmeg in it, which I think it always compliments white creamy sauces and dishes...
26th Apr, 2011
Made this the other day and it turned out really good. Sadly we ended up eating it almost all between the two of us with barely a slice left for the next day, so feel fat a guilty! lol Only added half the cream and checked the seasoning before cooking and for me the balance of the sweet onions and the salty cheese was fine. Used my own pastry and all was good, enough left for another. Now in the process of making a purple asparagus and stilton tart, but think I should have used another egg as there is not as much volume as with the onions. Oh well.
26th Mar, 2011
As many comments suggest a delicious creamy quiche. Super with a tossed green salad for a lunch with friends. Used all the cream recommended and a deep tin. No problems setting. I keep a few chickens and they lay large to extra large eggs. Also found it easy and quick to do. Next time and I'm sure there will be one, think I will add some fresh thyme to balance the sweetness of the onions.
19th Jan, 2011
Was very surprised at how delicious this was; better than a supermarket one I'd recently bought, about twice the size and half the cost to make. Definitely recommended.
16th Oct, 2010
I made this for my son's second birthday party and it disappeared in seconds. I made the case from the cheesy pastry from the slow roasted pesto tart and after reading reviews made sure that I seasoned everything well. Fantastic


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