Cream together in a large bowl butter, peanut butter, sugar and brown sugar for 1 minute.
Add egg, baking soda, salt and vanilla, mix to combine.
Add flour and mix until just combined.
Scoop into about 22 cookies.
Make crisscross patterns on the cookies with the tines of the fork, dipping the fork into small bowl of sugar after each cookie. Then sprinkle an additional pinch of sugar on each cookie.