01 - Preheat your oven to 400°F. Line a baking sheet with parchment paper or lightly grease it to prevent sticking.
02 - In a small bowl, combine the softened butter, chopped fresh dill, minced garlic, lemon zest, sea salt, and black pepper. Mix these ingredients thoroughly until well blended into a compound butter.
03 - Gently pat the salmon fillets dry with paper towels. Arrange them skin-side down on the prepared baking sheet, ensuring they are spaced adequately.
04 - Evenly spread the prepared dill butter mixture over the top surface of each salmon fillet.
05 - Place a couple of thin lemon slices directly on top of each butter-coated salmon fillet.
06 - Bake the salmon for 15 to 18 minutes, or until the fish flakes easily with a fork and is cooked through. The internal temperature should register 145°F when checked with a food thermometer.
07 - Carefully remove the salmon from the oven. Transfer the cooked fillets to individual plates and garnish with fresh dill sprigs. Serve immediately with extra lemon wedges on the side.