Recipe:

1. Preheat the oven to 180C/160c fan/4 gas mark. Add the walnuts and hazelnuts to a food processor and pulse blend until roughly chopped. In a large mixing bowl, toss together the ingredients for the filling apart from the apple slices.
2. Brush a square baking dish with some of the melted butter. Cut the filo pastry to size and lay one sheet on top of the melted butter. Brush the top with more melted butter. Repeat this process until you have a stack of 8 buttered sheets of filo pastry.
3. Spread the filling mixture on top into one even layer. Top with half of the apple slices.
4. Brush the top of the apple with melted butter and then repeat the filo pastry layering process but this time, add a thin layer of apple slices in between each sheet of filo pastry.
5. Heat any remaining melted butter until boiling and drizzle over the baklava. Bake for 1 hour, or until golden all over.
6. In the meantime, add the caster sugar, honey, water and allspice to a small saucepan. Bring to the boil, then reduce the heat and simmer for 10 minutes. This is your syrup, set aside to cool.
7. Once baked, remove the baklava from the oven and pour over the syrup. Allow to cool a little then cut into portions and serve.