Pre-heat oven to 200C/400F gas 6. Mix the diced pear, dried cranberries, ground spice, sugar and lemon juice.
Roll out the puff pastry to a large rectangle and spoon the fruit mixture down the centre of the pastry. Make a series of cuts in towards the fruit and plait the pastry over the top of the fruit.
Place the jalousie on a baking sheet, brush with egg and sprinkle with the caster sugar. Bake in the centre of the oven for 25 minutes or until the pastry has puffed and turned a golden brown. Serve warm with cream.