Preheat the oven to 425 degrees.
Clean the asparagus by rinsing it well under cold running water, then dab them with a paper towel to dry them.
Snap off the ends of each asparagus stalk.
Arrange the asparagus in a single layer on a rimmed baking sheet lined with parchment paper.
Pour a little olive oil over the asparagus and toss it so that all the stalks are coated.
Sprinkle with salt and pepper and give it another toss.
Bake, uncovered, for 10 to 15 minutes, depending on the thickness of the asparagus. The asparagus is done when it's tender but still crisp.
If desired, garnish with lemon slices or freshly shaved parmesan cheese.
Enjoy!