Here's the description of the movie/T.V. show that has haunted me since I was a kid.
I believe it aired in the '80s or early '90s and I've seen it on French-Canadian television, so it may have been foreign.
Basically, it's the story of a family (I believe it's a mom, a dad and their two kids) and they're going about their usual business in their house*. As it goes on however, the family starts to complain about heat (the temperature inside the house keeps getting hotter) and they can't get out, all the doors and windows are blocked.
At some point also, they discover this huge green mass/monster covering the floor from one of the rooms and it's expanding rapidly. Everyone screams and panics, and that's when you realize that the house* in question is actually a doll's house that's been put in the oven by the naughty brother.
*O.K., so let me explain: It turns out that this kid put her sister's doll house inside the family's oven and left some green candy inside (which melted because of the oven's heat) and at the end you come to understand that you had been following the horrible story of a bunch of dolls trapped inside an oven.
It might sound crazy, but it ain't a dream! I really saw that on T.V.
Tip: Someone once told me it might have been from an episode of THE RAY BRADBURY THEATER, although I've never been able to verify that claim.
Thank you for helping!