In a pot of boiling water, cook the zucchini or squash until tender, drain well, place in a mixing bowl.
Melt the 1 tablespoon of butter in a non stick pan, when hot, cook onion until soft but not browned, add to the zucchini and toss together.
To the zucchini add the soup, sour cream, and carrot. Mix together.
Preheat your oven to 180° C (350° F), get out a 9x13 baking pan.
In another mixing bowl, mix together the dry stuffing mix and the 1 cup of melted butter.
Add ½ the stuffing mixture to the baking pan, spread out evenly, it does not cover the bottom of pan, just spread out best you can. (I forgot to take this photo.)
Add the zucchini mixture on top of the dressing and spread out evenly.
Sprinkle remaining stuffing mix over the top. (This is basically what the bottom will like as well.)
Bake for 30-35 minutes.
Serve as a main dish or a side, enjoy.