It's really easy and incredibly tasty, works just as well with cauliflower but that has a slightly pasty appearance. If you too suddenly get the urge to eat this tasty treat, here is the receipt:
2tbsp olive oil
1 onion, 1 stick of celery, 1 med potato- all chopped
1 portion of stock
1 largeish head of broccoli
Some stilton- how much is a personal thing (I love it...)
Heat the oil in a heavy based pan and cook the onions until soft and golden (mine was a red onion-works with any); add the diced veg including the broccoli stalks (but not the florets yet); sweat off this concoction for around 5 minutes (ie put the lid on the pan and lower the heat).
Now, add the stock liquid, how much depends on the consistency you want. I like soup to have body so I used maybe a pint. Cook this for 15 minutes until all the veg is as soft as you like it. If you cook it less there will be more substance to your soup. Add the broccoli florets and cook for a further 10 or so minutes.
Whizz it up. I used a stick blender but you may have a processor or liquidiser. You can add most of the stilton at this stage as well, saving some to crumble on top before serving.