I don’t usually use recipes as such.
Just chopped onion and celery, fried gently until soft, then a load of whatever other root veg I have - carrots, potatoes, swede, celeriac, etc., diced small, plenty of stock from cube or chicken carcass, simmered until soft. Often a handful of red lentils or pearl barley - or both - added with root veg. Chopped parsley if I have any.
Any green veg - chopped leeks, cabbage, broccoli, cauliflower, quartered sprouts, etc., added just for the last few minutes. Plenty of black pepper!
I don’t blend this sort of soup - dh loves it as it is, nice and thick.
Freezes fine.
One I do blend is curried parsnip, v easy. Just fry some onion gently, add curry powder, then chicken or veg stock, plenty of parsnips, peeled and cut into rough chunks.
Simmer until all soft and blend.