Preheat your oven to 400°F (200°C).

Wash the asparagus and trim any tough or woody ends.

Place the asparagus on a large baking sheet in a single layer.

Drizzle the olive oil over the asparagus and sprinkle with minced garlic, salt, black pepper, and red pepper flakes (if using). Toss to coat evenly.

Roast in the oven for 10-12 minutes, or until the asparagus is tender and slightly crisp.

Remove the baking sheet from the oven and sprinkle the grated Parmesan cheese evenly over the asparagus.

Return the asparagus to the oven and roast for an additional 2-3 minutes, or until the cheese is melted and golden.

Garnish with freshly chopped parsley, if desired, and serve immediately.