Method
Pastry
Sift the flour, icing sugar, cocoa into a large bowl. Add the cold butter and rub the mixture between your fingers into fine crumbs.
Mix through the egg and a little of the ice-cold water until the mixture clumps together. Shape into a ball, wrap and refrigerate for 1-24 hours.
Grease a 24cm loose-bottomed tart pan. Roll the chilled pastry out between two pieces of greaseproof paper into a 28cm diameter disc, about 2mm thick. I place mine in the fridge or freezer again briefly at this stage – this helps to harden the butter.
Carefully line the tart pan with the pastry, gently pushing it into the edges. Refrigerate for 30 minutes.
Filling
Preheat the oven to 180°C.
Melt the butter and chocolate in a bain-marie, stirring until completely smooth. Remove from the heat, whisk in the cocoa powder and set aside to cool.
In a separate bowl, whisk together the eggs and the sugar. Fold this through the cooled chocolate mixture, until just combined, then gently fold through the almond meal.
Remove the tart case from the fridge and prick the base with a fork. Fill with the chocolate frangipane mixture, spreading it out evenly with a spatula.
Peel (only if preferred) and core the pears, then cut into halves. Carefully and decoratively fan-cut the halves, then gently press each half, fanned out, into the surface of the frangipane.
Bake the tart in the middle of the oven for 25-30 minutes until the surface is firm and a toothpick comes out clean.
Cool completely, remove from the pan, cut and serve with yoghurt or freshly whipped cream.