Roberta's Zucchini Casserole

1 cup carrots grated
1 small chopped onion
2 cups peeled grated zucchini

Boil in salted water until tender. Drain. Add 1 cup sour cream, 1 can cream of chicken soup
Mix 2 cups soft bread crumbs 1/2 cup butter 2 tsp sage
Layer vegetables, crumbs, vegetables
Bake at 350 degrees about 30 minutes