pre-cook the noodles, then mix it all together and cook on 350.. I can't remember how long to cook it ! :(
some add crumbled Ritz to the top, some leave it, it is good either way :) we cooked it uncovered.
this is a tender spot for me D.. after my parents divorced my dad made this for us kids EVERY other sunday (visitation) for dinner before he took us home to mom. I cannot eat it now. he taught me how to make it, and I did for years. I would not eat tuna any other way it is sooo goood. I cannot remember how long to cook, it, I didn't write it down. :( and I cannot ask Dad now.
maybe my sister will remember. i want to say 20 minutes?

lol tozie it is ok
