there seems to be a lot of good guessers competing for the the prize on this one. I almost gave up sifting through all the wrong guesses because there were so many of them. But after a long list of cookie colloquialisms I found a winner!
The Answer is in fact biscuit and the winner is Staci Paul.
Congratulations Ms. Paul and expect to see your prize in the mail soon.
Cheers
...I'll try to make the next one more difficult.