Forgotten Cookie

Directions

1. 1
   Take oven rack out of the oven and cover with aluminum foil and set aside.
2. 2
   Preheat oven to 350°.
3. 3
   Mix egg whites, sugar, vanilla and vinegar.
4. 4
   Beat until it forms peaks.
5. 5
   Add chocolate chips and nuts, if desired.
6. 6
   Spoon on foil.
7. 7
   Place rack in oven and turn oven off.
8. 8
   Leave overnight.