Can anyone recommend a 1 time Italian cooking class for a reasonable price that would be fun for a family and is either done privately in the home or is located in an area that’s easy to reach via public transport preferably the underground?
You haven't specified a city. Is it Rome you are interested in?
These are all local Romans, food is cooked and served in their homes.
https://www.bonappetour.com/lists/cook-in-rome/?currency=EUR&gclid=CLif79rwk9MCFZGGaQodk7IG_w