For the pastry
250g plain flour, plus extra for dusting
125g cold unsalted butter, cubed
Zest of 1 lemon
50g icing sugar
1 egg, fridge cold
For the filling:
125g unsalted butter, softened
125g golden caster sugar
2 eggs, beaten
40g plain flour
100g ground almonds
Zest of 1 lemon
3 – 4 tbsp lemon curd
200g blueberries
Extra lemon zest and crème fraiche to serve