01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - Pat salmon fillets dry, place on the baking sheet, drizzle with olive oil, and season both sides with salt and pepper.
03 - Combine melted butter, minced garlic, lemon juice, and lemon zest; spoon the mixture evenly over each salmon fillet.
04 - Bake the salmon for 14 to 18 minutes until cooked through and flaky, reaching an internal temperature of 145°F.
05 - While salmon bakes, mix sour cream, mayonnaise, dill, lemon juice, Dijon mustard, salt, and pepper in a bowl; adjust seasoning to taste.
06 - Serve the baked salmon hot with a generous topping of dill sauce.