Serves 8-10
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  1. Preheat the oven to 180˚C/160˚C fan/gas mark 4. Roll out the pastry into a 30cm circle, then transfer it into a fluted flan tin. Nestle it into the bottom and up the sides of the dish, then trim any excess pastry.
  2. Line the pastry with greaseproof paper, fill with baking beans, then bake for 15-20 minutes.
  3. Remove the paper and beans from the pastry. Beat one of the eggs, then brush it over the pastry. Bake again for five minutes until golden.
  4. Meanwhile, whisk the caster sugar, remaining eggs and egg yolks until thick and creamy.
  5. Melt the chocolate and butter in a bowl set over a saucepan of gently simmering water. Leave to cool for a minute, then stir into the egg mixture until glossy.
  6. Spread the caramel over the tart base and top with the sea salt.
  7. Spoon over the chocolate mixture, spreading evenly. Bake for 25 minutes or until the centre is nearly set.
  8. Top with a few extra sea salt flakes and leave to cool for one hour before serving.

Nutrition Facts

Per Serving: 529kcals, 31.6g fat (13.9g saturated), 57.4g carbs, 39.4g sugars, 6.3g protein, 1.1g fibre, 0.37g sodium