01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease a baking dish.
02 - Place the salmon fillets on the prepared baking sheet, skin-side down if applicable.
03 - In a small bowl, whisk together melted butter, minced garlic, lemon juice, lemon zest, chopped parsley, salt, and black pepper.
04 - Evenly spoon the butter mixture over each salmon fillet, ensuring thorough coverage.
05 - Place a lemon slice atop each fillet as desired.
06 - Bake for 12 to 15 minutes until the salmon flakes easily with a fork and is opaque at the center; internal temperature should reach 145°F.
07 - Remove from oven. Garnish with additional parsley and lemon slices, then serve immediately.