In first place: 

On the polluting traits of raisins:

Buttertarts, tainted
The wrinkled grapes take over
My dessert, ruined


Prize: Free IRS tee of choice!



In second place:

On behalf of the
students in my Grade 4/5
class, raisin haikus


Prize: Raisin the Bar pins!
And in third place: 

Don't blame me raisin
Now flat goo under my shoe
You fell on the floor


Prize: 15% discount on all items!