Benjamina Ebuehi's cardamom crumble mince pies

1. For the pastry, put the flour, sugar and salt in a food processor and pulse a few times to combine. Add the butter and pulse until the mixture looks like coarse sand. With the processor running, add the egg yolk and 1 tbsp ice-cold water - it should start to clump; add a little more water if needed. Turn out onto a lightly floured surface and knead very briefly to bring together. Pat into a large disc, wrap and place in the fridge for at least 1 hour, until firm.

2. Preheat the oven to 200˚C gas mark 6. Put the crumble ingredients in a bowl. Rub the butter into the flour with your fingers until you have chunky clumps; chill until needed.

3. Once the pie pastry has chilled, turn it out onto a lightly foured surface and roll into a circle about 0.5cm thick. Using a 9cm cutter, cut out 12 discs and press them firmly into the holes of a muffin tin. Fill each with 2 tsp mincemeat and cover each pie completely with the crumble mixture. Bake for 25-30 minutes or until the pastry is a deep golden colour. Remove from the oven and allow to cool in the tin for 5 minutes before transferring to a wire rack to cool completly. Dust with icing sugar before serving.