I made this the other day out of stuff that needed using up and it was lovely.
1 BNS, cut in half, drizzle in OO and roast. When cooked roughly dice.
Chop 1 onion, soften in a little butter and a bit of OO. Add the diced BNS, 1 tin of tomatoes, 1 chopped fresh chilli and some veg stock.
Boil for a while then blitz with the hand blender.
Wintery & warming and lush.
Enjoy.