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Onion Tart

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Onion Tart Appetizer
Photo by Alan Benson

This onion tart recipe evolved from the apfel wehr, my Swiss aunt's recipe for a traditional Swiss apple tart. Chilling the tart shell in the fridge for 2 hours before blind-baking will help prevent the pastry from shrinking.

Recipe information

  • Yield

    Serves 8

Ingredients

Pastry:

350 g (12 ounces/2 1/3 cups) plain (all-purpose) flour
180 g (6 1/2 ounces) cold unsalted butter, chopped
2 tablespoons cold water

Filling:

1 kg (2 pounds 4 ounces/about 6) brown onions, roughly chopped or sliced
60 ml (1/4 cup) olive oil
4 egg yolks
250 ml (1 cup) pure cream (35% fat)
Pinch of freshly grated nutmeg
Sea salt and freshly ground black pepper

Special equipment:

26–28 cm (10 1/4–11 inch) tart (flan) tin with a removable base

Preparation

  1. Step 1

    To make the pastry, process the flour, butter and water together in a food processor for a few minutes until a rough dough forms. Remove, wrap in plastic wrap and refrigerate for 30 minutes.

    Step 2

    Preheat the oven to 180°C (350°F/Gas 4).

    Step 3

    Roll the dough out on a floured bench and gently press into the tin. Trim the pastry to fit and reserve the left-over pastry to patch any cracks.

    Step 4

    To blind-bake the tart, line the pastry shell with foil and fill with baking weights or uncooked rice or beans. Bake until cooked, about 20 minutes. Remove the foil and weights and bake for an additional 15–20 minutes until lightly golden. If there are any cracks, patch with the left- over pastry.

    Step 5

    While the tart shell is baking, prepare the filling.

    Step 6

    In a large frying pan over low to medium heat, sauté the onion in the oil until very soft and light brown. This may take up to an hour. Set aside to cool slightly. Beat the egg yolks with the cream. Add the nutmeg and season well with salt and pepper. Stir the onion through the cream mixture.

    Step 7

    Carefully fill the pastry shell with the filling, place in the oven and bake for 40–45 minutes, or until the filling is set. Serve warm or at room temperature.

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Recipe from Monday Morning Cooking Club: The Feast Goes On, by Alan Benson, Copyright © 2013, published by HarperCollins.

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