Soak Bread Crumbs In Milk. Mix All Remaiing Meatball Ingredients Except Butter. Form Into Walnut Sized Meatballs. Brown Them Well In The Butter. Cover Simmer 1 Hour. Sauce: Saute Onions In Butter Until Carmelized. Blend In Flour And Salt. Slowly Add Milk And Beef Broth. Stir Until It Thickens Somewhat. Pour Over Meatballs And Server.