First preheat oven to 425ºF and spray a baking sheet with nonstick cooking spray.
Next, prepare asparagus by snapping off the ends. You can use a knife to cut them off, or just snap them right off.
Then, place asparagus on the baking sheet and drizzle with olive oil. Toss.
Generously season asparagus with salt and pepper and toss again.
Sprinkle on 1/2 of the grated parmesan cheese and lemon zest and toss one more time.
Roast at 425ºF for 8 minutes*. Then, remove from oven, sprinkle on the remaining parmesan cheese and toss. Bake again for 2-4 more minutes, depending on how thick your asparagus spears are.
Serve with fresh lemon zest and more cracked pepper.
Video
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Notes
Roasting time: we used thinner asparagus spears. So, if you buy super thick asparagus, you may need to increase your bake time.