A healthy chowder?

Clam Chowder - so how do you make a healthier version?  Broccoli chowder is the answer.  

I had creamy clam chowder in the BA lounge the other day. It was lovely but not very healthy and very, very salty.   Richard loves chowder so I made him some, a healthier version. 

Finely chop 2-3 onions, coarsely chop the stalk and shred the heads of a couple of heads of broccoli. Put in a saucepan with some stock and close fitting lid to soften. 

Pierce 2-3 med potatoes and pop in microwave for 10 mins then plunge in cold water to cool. Dry and slice.   They should be almost cooked but not too soft. 

In a high powered blender put 1 can of cannellini beans, a large pack of silken tofu, some soy or oat cream and 2 tablespoons of rice flour. Add some stock powder, some salt (or substitute) and pepper. Whiz till like thin cream. Pour into pan (not draining the onion and broccoli) and the sliced potatoes. 

Bring gently to boil and stir till it thickens. 

Adjust seasoning. You can add fresh tarragon too.