Make-ahead treacle tart

Method

1. Sift the flour and a pinch of salt into a large bowl or food processor. Add the chopped butter, then work in with your fingertips or pulse to the texture of fine breadcrumbs. Stir through the lemon zest. Quickly mix through the egg yolk, adding iced water (1-2 tbsp) until the dough just comes together. Knead briefly until smooth, then shape into a flat disc, wrap in cling film and chill for 30 minutes in the fridge.
2. On a lightly floured surface, roll out the pastry to about the thickness of a 50p piece and so it fits a ?23cm x 2cm loose-bottomed, fluted round tart tin. Prick the base all over with a fork and chill in the fridge for a further 30 minutes. Preheat a baking sheet in the oven to 200ŒÁC/fan180ŒÁC/gas 6. Line the tin with baking paper and baking beans or rice, then blind bake in the oven for 12 minutes. Remove the paper and beans/rice and?return to the oven for 5 minutes or until golden. Reduce the oven to 180ŒÁC/fan160ŒÁC/gas 4.
3. For the filling, spoon the syrup into a saucepan, add the ginger and gently warm through. Stir through the breadcrumbs, egg, lemon zest and juice, mixing well. Pour into the pastry case. Bake for 20-25 minutes until golden and almost set. Remove from the oven and cool for 15 minutes. Serve warm with double or clotted cream.