01 - Preheat your oven to 400°F. Line a baking tray with parchment paper or lightly grease it with cooking spray.
02 - Place the salmon fillets on the prepared tray, arranging them skin-side down if they have skin.
03 - In a small bowl, whisk together olive oil, melted butter, lemon juice, minced garlic, salt, pepper, and dill until well combined.
04 - Spoon or brush the marinade mixture evenly over each salmon fillet, ensuring they are thoroughly coated.
05 - Arrange fresh lemon slices on top of each fillet if desired for extra citrus presentation and flavor.
06 - Bake for 12–15 minutes, or until the salmon flakes easily with a fork and is just cooked through to your desired doneness.
07 - Remove from the oven, garnish with freshly chopped parsley, and serve immediately while hot.