Easy Asparagus Tart

Bahan-bahan (8 porsi)

• 1 (9x9-inch) sheet frozen puff pastry (thawed overnight in the refrigerator)
• 1 large egg (plus 1 egg yolk, divided)
• 1 cup part-skim ricotta cheese
• 1/2 teaspoon lemon zest (plus juice of 1/2 lemon)
• 1/4 cup chopped fresh parsley
• 1/4 cup freshly grated Parmesan cheese (plus additional for serving)
• 3/4 teaspoon kosher salt (divided)
• 3/4 teaspoon ground black pepper (divided)
• 1 pound asparagus
• 2 teaspoons extra virgin olive oil
• 2 ounces prosciutto