A soup maker wow, they're expensive! Have to admit though I couldn't see the point in them as they don't hold huge amounts of soup especially when I make big family sized ones that do a couple of days,
Carrot leek and lentil is my favourite. I don't really weigh anything but get a few carrots, chop em up and stick em in a slow cooker with some chopped leeks, some lentils and some veg stock. Leave it overnight and then whizz it down with a stick blender (or if you're a disaster magnet and value your fingers get someone else to do it for you!)
I put some freshly ground black pepper in but I guess you could put some low fat creme fraiche in it too.
I am on the hunt for a nice butternut squash soup recipe if anyone has one!
2-3 pints veg stock (I always use Knorr stock pots) depends how thick you want the soup
1 largish red onion
2 jacket potato size spuds (sorry I've never weighed I just know by looking)
Salt & pepper