Custard Tart With Garibaldi Biscuits by Marcus Wareing

I watched this being made on Great British Menu this morning. It's kind of a food reality show on BBC. This recipe won the dessert category and was served to The Queen for her 80th birthday celebration. Lots of steps but it looked so good!

• Ready In: 2 hrs
• Serves: 4

Ingredients

• garibaldi biscuits

• 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

• custard filling

• 9  free-range  egg yolks
• 75  g caster sugar
• 500  ml  whipping cream
•  freshly grated nutmeg

Directions

1. Preheat the oven to 180C/350F/Gas 4.
2. 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.
3. Roll the dough on a lightly floured surface out to 5mm/½in 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.
4. Bake the biscuits for 8-10 minutes or until golden brown. Remove and cool on a wire rack. Keep in an airtight tin.
5. 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.
6. Turn the oven down to 170C/325F/Gas 3.
7. 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.
8. Turn the oven down to 130C/250F/Gas1.
9. 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.
10. Fill the pastry case with the custard, until 5mm/¼in 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.
11. Before serving, warm the biscuits through in the oven for 5 minutes. Cut the tart with a sharp knife and serve with the biscuits.