Cut up your squash into chunks and peel all the skin off
Chop your onions and potatoes
Pour 1 litre of water into a deep enough sauce pan to fit everything in
Crumble in your stock cube when the water starts to simmer
Add all the chopped up vegetables
Keep the water at a constant simmer until the vegetables are soft
Once everything is soft in the sauce pan , turn off the heat and using a hand held blender, blend until there are no lumps left
Put the salt, pepper and the parsley into the blended soup and mix in
If you want at this point add some sour cream or milk to make it creamy
