Preheat oven to 425ºF. Grease a baking sheet with cooking spray, line it with parchment paper, and set aside.
Break off the tough ends of the asparagus.
Arrange the asparagus on the prepared baking sheet in a single layer.
Drizzle with olive oil, and toss well. Use a pastry brush (basting brush) if necessary to coat each asparagus spear.
Sprinkle with salt, pepper and dried oregano.
Roast the asparagus for 10-12 minutes or until crisp-tender. Season with Parmesan cheese and lemon wedges.
Notes
You can snap off the tough ends as they'll naturally break at the woody part. Alternatively, you can snap one off and use it as a guide on where to cut the rest of the asparagus.
Make sure you do not pack the asparagus too tightly together on the sheet pan as they'll steam instead of roast in the oven.
Always wash and dry the asparagus thoroughly before roasting.
To store: Store the roasted asparagus in an airtight container in the fridge for up to 4 days.
To reheat: You can reheat leftovers in the oven or microwave.
To freeze: Place the cooked asparagus in a freezer-safe bag and freeze for up to 2-3 months.