In 4 quart saucepan over medium heat saute onion in butter then add flour and stir.
Add in zucchini, milk, and chicken flavor and bring to a slow boil.
Add cheese and whisk or stir until completely combined.
Add salt and pepper to taste.
I like quite a bit of black pepper in mine.
and for a nice bright kick add a tablespoon fresh sized lemon juice!
Note: if you’d like the soup thicker mix 2 tablespoons cornstarch with 3-4 tablespoons milk or water and drizzle Into simmering soup to thicken nicely.
puree soup with an immersion blender or regular blender for smoother soup.