01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease it.
02 - Arrange salmon fillets on the prepared baking sheet. Drizzle with olive oil, then season with salt and black pepper. Place a lemon slice atop each fillet.
03 - Bake for 12 to 15 minutes until the flesh flakes easily with a fork and the internal temperature reaches 145°F.
04 - In a small bowl, combine sour cream or Greek yogurt, mayonnaise, lemon juice, lemon zest, dill, minced garlic, salt, and black pepper. Whisk until smooth.
05 - Remove salmon from the oven and plate the fillets. Spoon the lemon dill sauce over the top or serve it alongside.
06 - Garnish with additional fresh dill or lemon wedges if desired.