Also if you could make being cosmopolitan cooking and eating acceptable earlier things might change health wise. Julia Childs made French cuisine more accessible to the American homemaker, and if we see more of that rather than the pre-prepared, easy prep foodstuffs of the post-war era then you blunt some of the problems we see today.
Thing was, America did see Julia cook that way, and still bought Swanson TV Dinners
And as more Women started working outside the house, you will see less time for cooking in the home, as OTL
Convenience is hard to beat, esp. tied with low cost