01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - Arrange the salmon fillets skin-side down in the center of the baking sheet. Spread the asparagus spears around the salmon in a single layer.
03 - In a small bowl, whisk together the melted butter, 2 tablespoons olive oil, minced garlic, lemon zest, lemon juice, thyme, parsley, paprika, salt, and pepper.
04 - Pour or brush the lemon-garlic butter mixture evenly over the salmon and asparagus. Drizzle the remaining 1 tablespoon olive oil over the asparagus.
05 - Bake for 15–18 minutes, or until the salmon is opaque and flakes easily with a fork, and the asparagus is tender-crisp.
06 - Optional: Broil for 2–3 minutes at the end for a golden finish.
07 - Remove from the oven, garnish with extra parsley and lemon wedges. Serve immediately.