1. Preheat oven to 200°C/400°F/Gas 6. Lightly grease a 20cms/8" flan dish or loose bottomed tin.
2. Make the pastry by putting the flour into a bowl, coarsely rub in the margarine then add sufficient water to mix to a soft dough. Lightly roll on some flour then roll out and use to line the prepared tin. Cover and leave in fridge while making up the filling.
3. In a bowl mix together the melted butter, sugar, egg and cinnamon. Gently stir the blackberries into this.
4. Remove pastry from fridge and arrange the apples on the base of the pastry, next gently spread over the blackberry mixture.
5. Bake for about 30 minutes until nicely risen and a deep brown colour.
6. Can be served hot or cold

Note:

Blueberries can replace the blackberries if liked!