1 cup white wine
1 teaspoon salt
1 pound halibut fillets or steaks
5 slices dry bread, crumbled, divided
1 cup mayonnaise
1/2 cup sour cream
1/4 cup chopped onion
Mix wine and salt; marinate fish for 1 hour or all day, if possible.
Drain fish; dry with paper towels. Dip both sides of fish into bread crumbs (reserving some on top); place in buttered baking dish.
Mix mayonnaise, sour cream, and onion, and spread over halibut. Sprinkle with remaining crumbs and paprika. Bake at 500 degrees for 20 minutes or until fish flakes with fork.