To prepare the filling, place a large saucepan over a medium high heat and add 2 tablespoons of butter. Add the pears, water, lemon juice and zest and sugar to the saucepan cook stirring occasionally until just soft and caramelised - this will take 5-7 minutes
Remove the pears and any caramel from the saucepan and place in a large ceramic bowl. Add the almonds, dates, cinnamon and nutmeg and stir until combined. Set aside until required
Meanwhile, lightly grease a flat baking tray and place down one sheet of filo pastry. Brush with the melted butter, then place another sheet on top. Repeat with the remaining 2 sheets of pastry
Leaving approximately 4cm on all edges of the pastry, lay the pear mixture along the length of the pastry sheets. Fold over the sides and edges and roll the pastry until you reach the end. Brush over the remaining melted butter
Place the tray into the pre heated oven and cook for 45 minutes or until heated through and lightly golden. Slice and serve warm with lots of ice cream