Asparagus Bundles

Pinch gray salt

Freshly ground black pepper

1 tablespoon finely chopped fresh parsley

1 teaspoon freshly grated lemon peel

1 tablespoon freshly grated Parmesan cheese

1 teaspoon salt

1 large bunch (about 1 lb) fresh asparagus, trimmed to even lengths

Unsalted butter for greasing baking dish

2 tablespoons extra-virgin olive oil

Additional gray salt and freshly ground black pepper

8 thin slices prosciutto (4 oz)