فطيرة البصل المكرمل
French 40 Mins Prep · 45 Mins Cook
- To make the pastry, combine the flour, 2 tbsp Parmesan and salt in the bowl of a stand mixer fitted with the paddle attachment.
- Mix in the cold, cubed butter with the machine running on a low speed until small pieces of butter are visible and the mixture as a whole just begins to take on a pale yellow colour (indicating that the butter has been worked in sufficiently).
- Stir the water and lemon juice together and add this to the dough all at once, mixing until the dough just comes together.
- Shape the dough into a disc, wrap and chill for at least 2 hours before rolling.
- Roll the pastry out on a lightly floured surface to 5mm thick. Sprinkle the remaining 2 tbsp Parmesan in the middle.
- Transfer the disc to a large lined baking sheet.
- Preheat the oven to 180°C, gas mark 4.
- Peel the onions, leaving the roots intact.
- To make the filling, cut the onions into 8 wedges each (the roots should keep the wedges together).
- Place the onion wedges in a bowl and gently toss in the sugar and cider vinegar.
- Arrange the onion wedges, cut side up, in the middle of the rolled out pastry disc.
- Fold the edges of the pastry up over the onions so it overlaps slightly.
- Brush the edges with the whisked egg and bake in the preheated oven for 30-45 minutes or until the pastry is golden and the onions are roasted and sticky.
- TOP TIPThe pastry can be frozen for up to 3 months and thawed in the fridge before rolling.
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