Step 1

Sift the flour, bread flour, salt, baking soda, and baking powder together into a large mixing bowl.

Step 2

In a large mixing bowl. beat the butter, brown sugar and granulated sugar in until fluffy.

Step 3

Mix in the eggs one at a time, then add the vanilla.

Step 4

Mix in the flour mixture and mix until combined.  Stir in the chocolate chips by hand.  Shape into a log, wrap with plastic wrap and chill until firm 30 minutes – overnight.

Step 5

Preheat the oven to 375 degrees F/190C.  Cut the dough into 1 inch thick slices and place onto a cookie sheet two inches apart.

Step 6

Bake until the cookies are golden brown around the edges but soft in the middle, about 10 - 12 minutes.

Step 7

Remove the cookies from the oven and let cool 10 minutes on the baking sheets, then transfer to racks to cool completely.