Preheat the oven to 400 degrees F.

Break off the tough ends of the asparagus and, if they're thick, peel them. Place the asparagus on a sheet pan, 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 15 to 20 minutes, until tender, but still crisp.