I saw a movie where as best I can describe them, little onion or turnip headed people come out of the oven and try to kill this woman. I think there was a tunnel behind the oven if I remember correctly. Probably around the same time and style as the Trillogy of Terror with the African Chief Doll.

This movie scared the hell out of me when I was a kid...

Don't Be Afraid of the Dark (TV 1973) - IMDb (http://www.imdb.com/title/tt0069992/)

It was also remade a few years ago.