Cut the squash in half lengthwise and steak cut the onion, rub with oil and sprinkle with a seasoning salt/Mrs Dash/rub of choice
BBQ the onions for about 1/2 hour on med heat, flipping after 15 minutes
BBQ the squash for about 45-1 hour depending on thickness. Skin side down for most of the time
Remove from bbq and let cool long enough to handle.
Scrape off most of the crisped cut side and scoop out insides of squash.
Remove the outer ring of the onion slices, as they'll most likely be quite charred. Cut roughly.
Put squash and onion into pot with stock, spices, and cream, and puree with a hand mixer.
Bring to a simmer and adjust spices or stock amount if required.