Ingredients

  • 100 g butter, melted in a saucepan
  • 100 g icing sugar, sifted
  • 100 g plain flour, plus extra for dusting
  • 100 g egg whites
  • 200 g currants
  • pastry dough
  • 225 g flour, plus extra for dusting
  • 1 pinch salt
  • 1 lemon, zest of, only
  • 150 g butter
  • 75 g caster sugar
  • 1 free-range egg yolk
  • 1 free-range egg
  • 9 free-range egg yolks
  • 75 g caster sugar
  • 500 ml whipping cream
  • freshly grated nutmeg

Method

  • Preheat the oven to 180C/350F/Gas 4.
  • First, make the biscuits.
  • Mix together the butter, icing sugar and flour until smooth.
  • Slowly add the egg whites, stirring, until they are completely incorporated, then fold in the currants.
  • Bring together into a ball, wrap in cling film and chill for at least one hour.
  • Roll the dough on a lightly floured surface out to 5mm/ 1/2in thick.
  • Cut into 12 rectangles - you may have some dough left over.
  • Place on a baking tray lined with greaseproof paper, ensuring the biscuits are not touching each other.
  • Chill in the fridge for 30 minutes.
  • Bake the biscuits for 8-10 minutes or until golden brown.
  • Remove and cool on a wire rack.
  • Keep in an airtight tin.
  • For the pastry, rub together the flour, salt, lemon zest and butter until the mixture resembles breadcrumbs.
  • Add the sugar, then beat together the egg yolk and whole egg and slowly add these, mixing until the pastry forms a ball.
  • Wrap tightly in cling film and refrigerate for two hours.
  • Turn the oven down to 170C/325F/Gas 3.
  • Roll out the pastry on a lightly floured surface to 2mm/one eighth-in thickness.
  • Use to line an 18cm/7in flan ring placed on a baking sheet.
  • Line with greaseproof paper and fill with baking beans, then bake blind for about 10 minutes or until the pastry is starting to turn golden brown.
  • Remove the paper and beans, and allow to cool.
  • Turn the oven down to 130C/250F/Gas1.
  • For the filling, whisk together the yolks and sugar.
  • Add the cream and mix well.
  • Pass the mixture through a fine sieve into a saucepan and heat to blood temperature.
  • Fill the pastry case with the custard, until 5mm/ 1/4in from the top.
  • Carefully place in the middle of the oven and bake for 30-40 minutes or until the custard appears set but not too firm.
  • Remove from the oven and cover the surface liberally with grated nutmeg.
  • Allow to cool to room temperature.
  • Before serving, warm the biscuits through in the oven for 5 minutes.
  • Cut the tart with a sharp knife and serve with the biscuits.