Preheat oven to 200°C. Line two large baking trays with oven proof baking paper.
In a large bowl combine sausage mince, sauces, cumin, salt and pepper.
Cut each piece of pastry in half. Place a strip (like a long sausage) of mince along the centre of each pastry piece. Roll to enclose with the seam underneath.
Cut the sausage rolls into required lengths using a sharp knife and place on baking trays. Combine the egg and milk and whisk together. Using a pastry brush, brush the tops of the rolls with egg and milk mixture. Top the rolls with a sprinkle of seeds, if using.
Bake for around 25 minutes or until golden and cooked through. Serve warm with plenty of tomato sauce.