01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper for easy cleanup.
02 - Place trimmed asparagus spears in a single layer on the prepared baking sheet, ensuring even spacing for proper roasting.
03 - Drizzle olive oil evenly over asparagus. Sprinkle with kosher salt and black pepper. Use tongs to toss gently until all spears are lightly coated.
04 - Roast for 12-15 minutes until asparagus is tender-crisp and tips are lightly golden. Cooking time may vary based on spear thickness.
05 - Remove from oven. While hot, sprinkle generously with freshly grated Parmesan cheese and lemon zest, allowing cheese to soften slightly.
06 - Squeeze fresh lemon juice over the dish immediately before serving. Serve warm while cheese is still slightly melted.