Preheat your oven to 220°C (430°F) and line a baking sheet with parchment paper. Trim the tough ends off the asparagus, about an inch from the bottom, keeping the spears uniform for even roasting.
In a small bowl, whisk together the olive oil, minced garlic, salt, and pepper until well combined. This flavorful mixture will coat the asparagus evenly.
Arrange the asparagus on the prepared baking sheet in a single layer. Drizzle the garlic oil mixture over the spears, then toss gently with tongs or your hands to ensure each piece is well coated.
Roast the asparagus in the preheated oven for 10-12 minutes. You'll see the tips turn golden and crispy while the stalks remain tender and vibrant green.
Remove the baking sheet from the oven and sprinkle the freshly grated parmesan evenly over the hot asparagus. The cheese will melt slightly into the warm stalks.
Return the asparagus to the oven for another 2-3 minutes, just until the cheese is bubbly and begins to brown lightly, enhancing the nutty flavor.
Take the tray out of the oven and let the asparagus rest for a minute. If desired, sprinkle with lemon zest and red pepper flakes for added brightness and a subtle kick.
Transfer the roasted asparagus to a serving platter or serve directly from the sheet pan. The tips should be crispy, the stalks tender, and the cheese melted and fragrant.
