Scalloped Potato

4kg washed potato, sliced in 5mm slices, with the skins on
8 onions, sliced
3 vegetable stock cubes, in 1 cup of hot water
3 pre-prepared sauce sachets, creamy style
2 cups milk
250g cheese
In a large bain marie dish, place the sliced potatoes in 2 layers then cover with half the onions. Pour over the vegetable stock and the milk. Evenly drizzle half of the pre-prepared sauce over the onions. Layer the remaining potatoes over the onions, there should be about another 2 layers. Drizzle the remaining sauce over the top of the potatoes. Spread the other half of the onions on top and cover with the cheese. Cover the top with baking paper and then seal the dish with foil.
Bake in a moderately hot oven for 1 hour then uncover and bake for a further 30mins.