Alsatian Onion Tart
Serves 6 people
Ingredients
Pastry
225 grams plain flour, plus extra for rolling
½ teaspoon salt
130 grams cold unsalted butter, cubed
1 egg yolk
1-2 tablespoons ice-cold water
Filling
60 grams butter
800 grams onions, finely sliced
200ml double cream
4 egg yolks, beaten
a rasp or 2 of freshly grated nutmeg
salt and black pepper
Method
For the pastry, put the flour, salt and butter in a food processor and pulse until you have a mixture resembling breadcrumbs. Transfer it to a bowl, add the egg yolk and just enough of the water to bring the dough together; too much water makes tough pastry.
Turn the dough out on to a lightly floured board. Roll it out to a circle about 26cm in diameter and use it to line a 23cm loose-bottomed flan tin. Cover and refrigerate for 30-40 minutes.
While the pastry is chilling, make the tart filling. Melt the butter in a large pan and add the onions, stirring to coat them in butter. Cover the pan with a lid and cook the onions over a low heat for 30-45 minutes until they are meltingly soft and sweet, checking occasionally to stir.
Take the pan off the heat then stir in the cream and the egg yolks. Season with the nutmeg, salt and pepper. Set aside. Preheat the oven to 200°C/180°C fan. Line the pastry case with greaseproof paper and baking beans then bake for about 10 minutes. Remove the beans and paper then put the pastry back into the oven for 3-4 minutes to dry out the base a little. Turn the oven down to 170°C/150°C fan.
Pour the onion mixture into the pastry and bake for 20-25 minutes or until just set. Serve warm or at room temperature with a green salad and a chilled glass of Pfeiffer Gamay.
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