Pre-heat oven to 400°F.
In a large bowl whisk together olive oil, thyme, salt and pepper.
Add asparagus and thoroughly coat with olive oil mixture.
Place asparagus on a sheet pan. Roast for 20 minutes until slightly crisp and tender.
Sprinkle with orange zest and serve. You can also squeeze a little fresh orange juice over the roasted asparagus for an extra citrus flavor boost.
TIPS:
Thoroughly wash the asparagus to remove any soil that may be hiding in the tips.
If the asparagus stems are hard and tough use a vegetable peeler to remove those areas.