In a bowl, combine 1 3/4 cups milk, bread crumbs, onions, salt,pepper. Crumble beef over mixture;mix well. Shape into 24 oval patties,place in two greased 15-in.x10-in.x1-in. baking pans. Cover; refrigerate 8 hours or overnight. Bake, uncovered, at 350 for 15 minutes; drain. Combine soup and remaining milk; pour over patties. Cover and bake 20-30 minutes longer or until meat thermometer reads 160 the patties will be a a lightly pink inside due to ingredients. Yield:24 servings! I half the recipe and then I have cooked them without waiting all those hours and they were great! I take a knife and test to see if are done and they really are great! Hope you enjoy as much as we did!