It seems like this sentence should be fairly flexible with word order, and in particular that "A sütőben vannak almák" should be correct. (Emphasizing that it's the oven that the apples are in.) No?
Yes. All six posibble permutations are valid sentences.
Dovthey have slightly different meanings? I used "Az almák sütőben vannak".
There was no "az"...?
Why is "Almák a sütőben vannak" incorrect?
Vannak almak a sütöben - too unwieldy?