Cut broccoli and cauliflower into sections, leaving on half an inch of stem on each and for very thick stems on the cauliflower make a cut into the base of the stem with a small sharp knife. Add the 2 cups of water to a large stockpot and wash the cauliflower and place the largest sections in first then wash the broccoli and place on top, cover with a lid and bring to a boil and boil for about 3 minutes then remove from the heat. Leave for 5 minutes before removing lid to check if vegetables are slightly soft and remove the softess ones to a casserole dish and place lid back on for another 5 minutes then drain the water into a container and set aside for the sauce.. You dont need to completely cook the vegetables as they will finish cooking in the oven with the sauce and cheese.

SAUCE

Melt margarine or butter over a low heat, remove from the heat once melted and stir in flour until smooth. Return to heat and cook for a few minutes then gradually add the milk, stiring all the time and as the sauce thickens add more milk after you have added 3 cups of milk start adding the vegetable water until all used. ( Depending on how thick a sauce you like you may need to add more milk to thin it a little as it does thinken up slightly in the oven as well. ) Add salt and pepper and half a cup of cheese and stir well.

Pour the sauce over the vegetables in casserole dishes and top with the remaining cheese, place in a 180 degree celcius oven for half an hour until top is a golden brown.