of cheese. taste it, if you want add more ground pepper. always taste anything you are cooking to make sure you like it.
8. when ready, pour over the white sauce over all the ingredients and finally add your mashed potato on top. for me the best mashed potato is made by mashing the potatoes then beating in a knob of butter, splash of milk and freshly ground black pepper.
9. back into the oven for half an hour and dinner is ready. 