Preheat the oven to 400°.

Break off the tough ends of the asparagus and, if they're thick, peel them. Place the asparagus on a baking sheet, drizzle with olive oil, then toss to coat the asparagus completely. Spread the asparagus in a single layer and sprinkle liberally with salt and pepper.

Roast the asparagus for 25 minutes, until tender but still crisp.