Cook beans in boiling water or until crisp-tender, 5 minutes. Drain.
In bowl, toss beans with salt, pepper, seasoning and Parmesan.
Heat oven to 425°F.
Spread 1 slice prosciutto onto work surface. Roll up 7 or 8 beans on prosciutto. Transfer to large rimmed baking sheet. Repeat with remaining green beans and prosciutto.
Bake in 425°F oven 15 minutes. Serve warm. If making ahead, cook; cover, refrigerate a few hours. Reheat gently in oven or microwave.