Broccoli Soup au Gratin
If soup seems too thick, be sure to adjust with more broth if need be. If you pass the soup through a fine mesh strainer, the soup will achieve a finer texture.
If you do not have an immersion blender, you can blend the soup in batches in a traditional blender; use caution with hot broth.
Substitute Gruyere cheese for the Cheddar if desired, or use a combination of the two.