Method

1. Preheat the oven to 180°C / 350°F / Gas Mark 4
2. Bring pasta to the boil and cook following the instructions on the packet, approximately 13 minutes. Drain water once cooked
3. Flake the tuna into a bowl and add the chopped onion, Worcestershire sauce, salt if using, pepper and pasta
4. Pour some of the mixture from step 3 into a casserole dish and cover with a layer of breadcrumbs
5. Continue layering in this way until all ingredients have been used up
6. Finish with a layer of breadcrumbs on the top, dot the surface with the low-fat spread and bake in the preheated oven for 20 to 25 minutes
7. Serve immediately