HOW TO MAKE IT :
LETS MAKE IT-Preheat oven to 350F.
Wash zucchini; do not peel.
Cut into 1 inch cubes.
Add to a saucepan, cover with water and bring to a boil.
Cook 10 minutes. Drain.
Sauté the onion in 1 Tablespoon butter till tender.
Combine zucchini, onion, corn, Swiss cheese, eggs ,salt and pepper.
Transfer the mixture into a 2 quart casserole dish.
Combine the melted butter with the bread cubes and Parmesan cheese.
Sprinkle on top.
Bake 40 minutes.
Remove from oven and serve.