1Heat oven to 400ºF. Heat butter and lemon juice in square pan, 8x8x2 inches, in oven until butter is melted. Place salmon in pan; turn to coat both sides with lemon mixture. Sprinkle with onion salt, thyme and pepper.
2Bake uncovered 25 to 35 minutes or until salmon flakes easily with fork. Sprinkle with paprika; serve with lemon wedges and parsley.