01 - Set oven to 400°F and prepare a baking sheet by lining it with parchment paper or greasing lightly.
02 - Dry salmon fillets, place on baking sheet, drizzle with olive oil, then season both sides with salt and pepper.
03 - In a small bowl, combine melted butter, minced garlic, lemon juice, and lemon zest; spoon evenly over salmon.
04 - Bake for 14 to 18 minutes until salmon is flaky and reaches internal temperature of 145°F.
05 - Mix sour cream, mayonnaise, fresh dill, lemon juice, Dijon mustard, salt, and pepper in a bowl; adjust seasoning as needed.
06 - Plate baked salmon hot and spoon generous amounts of dill sauce on top.