Preheat oven to 400 degrees and line a large baking sheet with foil.
Season salmon generously with salt and pepper on both sides and place on prepared pan.
Fold foil up around the sides slightly to keep the juices from running out.
In a small bowl whisk together melted butter, honey, juice of lemon, garlic, and dried dill. Pour sauce over salmon. Place lemon slices on top.
Bake for 15 minutes, then broil for 3-5 minutes until edges slightly darken.
While salmon is baking, prepare the sauce by stirring together sour cream (or yogurt), mayonnaise, lemon juice, dill and pepper. Add milk 1 T. at a time until very smooth.
When salmon is finished cooking, spoon juices from the pan on top.
Serve with the creamy dill sauce and garnish with pepper, lemon slices and fresh dill.