2 cups coarsely chopped broccoli florets
1 can chicken broth
1/4 cup chopped onion
1/3 cup shredded medium cheddar
1/4 cup milk

Simmer broccoli, chicken broth, and chopped onion together until tender. Drain broccoli, reserving broth. Puree broccoli & onions in food processor until chunky smooth. Return broccoli to pan, mixing with broth until well blended. Add milk and cheese, heating till cheese is well blended.

I am not sure of the carb count, but most of the carbs come from the broccoli, so it can't be that bad .