Preheat the Oven: Preheat your oven to 425°F (220°C). Lightly spray a baking sheet with nonstick cooking oil to prevent sticking. This high temperature will help caramelize the asparagus while keeping it tender inside.
Prepare the Asparagus: Arrange the asparagus spears in a single layer on the prepared baking sheet and set aside. Make sure they aren't overcrowded to ensure even cooking and proper roasting.
Make the Garlic Oil: In a small mixing bowl, combine the olive oil, minced garlic, salt, and cracked black pepper. Mix well until thoroughly combined. This aromatic mixture will infuse the asparagus with flavor as it roasts.
Season the Asparagus: Drizzle the garlic and olive oil mixture over the asparagus, ensuring each spear is evenly coated. Use your hands or tongs to gently toss the spears for complete coverage.
Roast the Asparagus: Place the baking sheet in the oven and roast the asparagus for 10-15 minutes, watching for a vibrant color and tenderness. The asparagus should be bright green and just tender when pierced with a fork.
Add the Cheese: Once removed from the oven, sprinkle the finely shredded mozzarella cheese over the asparagus. Return it to the oven, using the broil or grill setting, until the cheese melts and turns golden brown, approximately 4-5 minutes. Watch carefully to prevent burning.
Final Touches: Adjust the seasoning with additional salt and pepper if desired, and serve immediately to enjoy the best flavor and texture. The cheese should be bubbly and slightly browned for the perfect finish.