Cream soup is also good, I know there are lots of recipes on the internet. Maybe I'll try it out once, but make it only half creamy :)

You can use sour cream, instead of milk and flour, or whipping cream, but I find whipping cream too heavy for my gallbladder and if you had an ultrasound, then you should not use it either.

I hope everything is ok with your gallbladder :)