Maybe I spent too much time in the South, but this makes sense to me. She’s saying “We’ll put that into a 350 degree oven, viewers.” I mean, not strictly necessary perhaps (who else would she be talking to?), but could be considered friendly or polite to acknowledge the people listening to her – am I right, Dopers?
It’s linguistically exactly like saying “Let’s get ready to rock, Detroit!”
I once heard learned counsel say to the judges of the Court of Appeal: “Youse guys know the law.”
we’ve never let him forget it. 
Verily, and if given a chance I would revive Thee.
Lancashire, as well. There’s even a society about preservation of Lancashire’s way of speaking (which includes “thou”, “thee”, and “thy” etc., although they are often written a bit differently, such as “thisel’” for “thyself”), and the literature and culture of Lancashire. It is called The Lancashire Society; it has a web page, too.
I am working to introduce “thou” more into conversation, notes, etc., though I am American. I think of it as an endangered part of English, and my interest in preserving it before it goes totally extinct (already I hear young people in Lancashire are more likely to use “you”, always) I liken to an animal enthusiast wanting to preserve an endangered species. 
Not unless you pay me. I’ll get on board with this for, say, five thou.
I see what thou did there.
Hey, it’s English, baby - why the hell not?
I love this book. Highly recommended.
I hate you forever.
I thought of this:
Thanks a lot for sharing that; I had totally forgotten about that book and I never actually read it, though I heard about it as a kid.
I honestly probably would have never known that I had a kindred soul in the 19th century. 