Heat the 2 tablespoons butter in a large non stick pan, add the zucchini, onion, and carrots, cover to steam. Turn occasionally. Season as desired with salt and pepper as desired.
Steam until tender, drain well.
In a mixing bowl, add the soup and sour cream and mix together. (I did use 1 cup as I love sour cream.)
In another bowl, add the stuffing and 1 cup of melted butter. (This is before I doubled the amount of croutons, and a more accurate amount is listed for the croutons and butter now.)
When the vegetables have softened, preheat your oven to 180° C (350° F), get out and grease a 2 quart casserole or 7x11 inch baking pan with butter or cooking spray. Add ½ the stuffing evenly to the bottom.
Add the vegetables to make a layer.
Add the soup mixture over the vegetables.
Add the remaining stuffing over the soup.
Bake for 30 minutes.
Serve and enjoy.