I'm not sure where this came from, Mom may have created it. My notes are, "excellent! - will probably work with most any vegetable so long as it's steamed before you add it to the soup."
4 T butter
5 T flour
3 c liquid dairy, heated (I guess this means, milk or cream or half&half, whatever you have)
1 c vegetable broth, heated
1/4 c vegetable broth, cold
1 onion, minced well
1 bay leaf
2-3 c chopped broccoli, steamed
1 heaping T cornstarch
Heat butter, fry onions until clear.
Add flour and stir.
Add hot milk and broth slowly, stirring after each addition.
Add bay leaf, stirring constantly.
To thicken, mix cold broth and cornstarch, then add to soup.
Simmer on very low heat "for a while".