Preheat oven to 375 degrees. Butter a baking dish.
Place fish fillets in prepared baking dish. Sprinkle with garlic salt, lemon pepper seasoning, and bread crumbs. Drizzle melted butter over fish. Place in preheated oven and bake about 15 minutes, or until fish is opaque and baked through.
While fish is halting, in a saucepan, over mediumĀ high heat, combine milk, mustard, sauce mix, and dill weed. Bring to a boil while stirring. Reduce to low; simmer, stirring about 1 minute.
To serve, place lemon slices in serving dish; place fish fillets on lemons. Drizzle Mustard Dill Sauce over fish and garnish with dill sprigs. Makes 2 servings. Enjoy!