Gap Year- reusing previously submitted criteria

<p>Im taking a gap year and reapplying to a few schools that i had applied to last year.
Can i use the same essay (supplemental) that i did last year if they haven't changed the prompt? And if i do would they notice? I mean, do they keep track of previous applications in their database and thus could tell that i am using the same essay?
I ask because i really like the essay i used previously and would love to avoid rewriting one.</p>

<p>Also, is it feasible to use the same teacher recommendations?</p>