Start by preheating your oven to 425 degrees F. This high temperature is perfect for roasting, allowing the asparagus to get that nice caramelization.
Next, trim the tough ends off the asparagus. You can either cut them off with a knife or snap them off with your hands. The latter method is fun and ensures you're discarding the woody parts.
Now it’s time to spread the asparagus onto a large rimmed baking sheet. Make sure the spears are in a single layer for even roasting.
Drizzle the asparagus with avocado oil. Use your hands to rub the oil all over the asparagus, ensuring that each spear is lightly coated. This will help them roast beautifully.
Sprinkle on the sea salt and garlic powder. Toss the asparagus lightly to ensure the seasonings are evenly distributed.
Place the baking sheet in the preheated oven and roast the asparagus for 10 to 20 minutes. The timing will depend on the thickness of your asparagus; thinner spears will take around 10 to 15 minutes, while thicker ones might need 15 to 20 minutes.
While roasting, keep an eye on the spears. They should become tender and slightly crispy. You want them to be vibrant green and beautifully caramelized.
Once they’ve reached your desired level of done-ness, remove the baking sheet from the oven. Immediately sprinkle the hot asparagus with parmesan cheese, lemon zest, and a little freshly ground black pepper. The heat will melt the cheese slightly, adding a creamy richness.
Serve the garlic lemon parmesan roasted asparagus alongside your main dish with fresh lemon wedges. Enjoy the burst of flavors!