Drizzle the olive oil over the asparagus spears on a small baking sheet. Season with garlic powder, crushed red pepper flakes, sea salt, and freshly cracked pepper to taste; toss until evenly coated.
Place into the oven to roast for 5-7 minutes, depending on the thickness of the spears, until just barely crisp-tender.
Combine the melted butter and the finely minced garlic, then pour over the roasted asparagus and toss to coat evenly.
Return to the oven to roast for 1-2 minutes, or until the asparagus is crisp-tender. Serve immediately. Enjoy.