Zucchini Casserole

1 lb ground beef
1/2 cup onion, chopped
7 cups zucchini, cut in large chunks
1 cup carrots, grated
1/2 cup butter, melted
1 pkg stuffing, chicken flavored
1 can cream of Chicken soup
1 small carton sour cream

Directions
Brown and drain beef and onion. Cook and drain zucchini and carrots. Pour butter over dressing and seasoning packet. Do not add water. Mix soup, sour cream, cooked vegetables, and meat. put in 13 x 9 inch pan and spread stuffing over the top. Bake at 350 for 35 minutes.