
step 1
Lightly grease a 23cm square cake tin and line with baking parchment. For the base, put the flour, butter and salt into a food processor and pulse to fine crumbs, then pulse in the coconut and sugar. Beat the egg yolk with the vanilla and 1 tbsp cold water, then add to the machine with the motor running, to make a soft dough. Roughly press into the prepared tin with your hands, dust with a little flour and press with the back of a spoon to push into the corners and flatten. Prick with a fork, then chill for 10 minutes. Meanwhile, preheat the oven to 200 ̊C, gas mark 6.