Inspiring vegetarian recipes
Try our vibrant veggie dishes, from meat-free lasagne to vegetable curry and vegetarian chilli
To make the pastry, put the flours, salt and butter into a food processor and pulse until it resembles breadcrumbs. Add the egg yolk and 2-3 tbsp of ice-cold water until it comes together as a dough. Wrap and chill.
Put the pancetta into a large, cold frying pan and cook until the fat has rendered and the pancetta is crisp. Scoop out onto a plate with a slotted spoon. Gently fry the garlic and chilli in the pancetta fat for a few minutes before adding the spring onions, cavolo nero and some seasoning. Cook very gently for 20-25 minutes until wilted and no moisture remains.
Remove the pastry from the fridge, roll on a floured worksurface to the thickness of a 50p coin and use it to line a 22cm x 4cm-deep pie dish, leaving 1cm of pastry overhanging. Line with baking paper and fill with baking beans. Chill for 20 minutes.
Heat the oven to 200C/fan 180C/gas 6 and bake the tart for 15 minutes. Remove the baking beans and paper, and bake for a further 10 minutes until really crisp and golden. Gently trim any overhang and cool.
Turn the oven down to 160C/fan 140C/gas 3. Whisk the eggs, cream, milk, nutmeg and ¾ of the gruyère with lots of seasoning, and stir through the pancetta. Spread the greens evenly on the base of the pastry, then pour over the egg mixture. Scatter with the remaining gruyère and bake for 40 minutes until just set in the middle and golden on top. Cool in the tin for 20 minutes, then serve warm.