Combine the lamb, onion, garlic, cumin, ginger, paprika, cinnamon, cayenne, saffron, parsley, coriander, salt and pepper in a frying pan and cook over a medium heat, uncovered and stirring occasionally. Cook for about 6 minutes, or until the moisture has completely evaporated and the lamb has cooked. Drain off and discard the fat. Add the egg and continue to stir for about 1 minute, or until it is cooked. Preheat the oven to 375F. Cut 3 inch wide strips of filo. Brush 1 strip with melted butter and place another one on top. Brush with the butter and place a heaped teaspoon of filling at one end. Fold the corner in to make a triangle. Fold along the line as you would in folding a flat. Repeat with the remaining filo and filling. Place on a greased baking sheet and bake for about 15 minutes, until golden. Serve immediately, warm or at room temperature.