01 - Preheat oven to 425°F. Line a rimmed baking sheet with parchment paper for easy cleanup.
02 - Place trimmed asparagus spears in a single layer on the prepared baking sheet, ensuring they do not overlap for even cooking.
03 - Drizzle olive oil evenly over the asparagus. Sprinkle with kosher salt and black pepper. Toss gently with your hands to coat each spear thoroughly.
04 - Roast for 12-15 minutes until asparagus is tender-crisp and edges show slight caramelization. Cooking time may vary based on spear thickness.
05 - Remove from oven and immediately sprinkle with freshly grated Parmesan cheese and lemon zest. Drizzle with lemon juice while hot.
06 - Transfer to a serving platter and serve warm alongside your main course.