01 -
Preheat oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.
02 -
In a large mixing bowl, combine the sliced zucchini, finely chopped onion, and shredded carrots. Toss thoroughly.
03 -
Add sour cream and cream of chicken soup to the vegetable mixture. Stir until the vegetables are uniformly coated.
04 -
Gently fold in the chicken-flavored stuffing mix and softened butter. Mix until all components are well combined.
05 -
Evenly spread the prepared mixture into the greased 9×13-inch baking dish.
06 -
Bake uncovered in the preheated oven for 30 to 35 minutes, or until the top is golden brown and bubbling.
07 -
Remove the casserole from the oven and allow it to cool for several minutes before serving.