Salmon with Creamy Dill Sauce

Step 1
Preheat oven to 350 degrees F (175 degrees C). Line a baking sheet with aluminum foil; grease the foil lightly.

Step 2
Place salmon fillet with skin side down on foil. Season salmon with lemon-pepper and onion salt; top with onion rings and lemon slices, dot with butter. Fold foil around salmon and seal tightly.

Step 3
Bake in preheated oven for 20 minutes. Unseal the foil and turn the oven's broiler on. Continue cooking the salmon under the broiler until the flesh flakes easily with a fork, 8 to 12 minutes.

Step 4
While the salmon bakes, stir sour cream, mayonnaise, white wine, capers, chopped onion, caper brine, lemon juice, horseradish, dill weed, garlic salt, and black pepper together in a bowl. Serve with the salmon.