Preheat the oven to 350F Line 2 baking sheets with parchment paper or Silpat baking liner.

In a small bowl, sift together the flour, baking soda and salt, set aside. In the bowl of an electric mixer fitted with a paddle attachment, on medium speed, beat the butter, brown sugar and granulated sugar until smooth, about 2 minutes. Add the egg and vanilla and mix on low speed until blended. Then slowly add the flour mixture and mix just until incorporated. With a wooden spoon stir in the chocolate chips.

Using a small ice cream scoop drop the dough onto the prepared baking sheets, spacing the dough mounds 2 inches apart.

Bake the cookies, 1 sheet at a time, at 350 F until the bottoms and edges are lightly browned about, 10-13 minutes. Cool on the baking sheets for 5 minutes, then transfer the cookies to wire racks to cool completely.