Preheat oven to 350 ºF
Line baking sheets with parchment paper or use ungreased sheets.
In a small bowl, combine flour(s) and baking powder. Set aside.
In a large bowl, cream butter, sugars, and salt together until light.
Beat in eggs and vanilla until smooth.
Mix in flour until just combined. Stir in chocolate chips.
Drop by rounded teaspoons onto cookie sheets, leaving 2" between cookies.
Bake for 10-12 minutes or until golden brown around the edges.
Cool for several minutes before transferring to racks to cool completely.