Zucchine Al Forno Con Parmigiano-Reggiano E Prosciutto

Preheat oven to 400ºF and spread butter in an 8x8-inch baking pan.
In a large saucepan of boiling water cook zucchini until crisp-tender, about 5 minutes.
Drain zucchini and cool until they can be handled.
Trim ends of zucchini and quarter lengthwise to form spears.
Wrap each zucchini spear in a slice of prosciutto and arrange side by side in pan. (Zucchini will be touching).
Sprinkle zucchini with parmesan cheese and pepper and bake until lightly browned, 10 to 15 minutes.
Serve zucchini warm.