hi phoenix,
try softening a finely chopped onion in a saucepan,with a small drop of oil,on a low heat,after 2-3mins add aclove of garlic again chopped.
while this is sizzling,peel and chop your butternut squash,add to pan stir it up,then cover with boiling water,and simmer till soft.
zap it with a soup blender add salt and pepper to taste,sometimes it may be to thick ,you can add a little more water,or if you like cream.