Levain Chocolate Chip Cookies

Preheat oven to 350 degrees.

Line two cookie sheets with parchment paper.

In a large mixing bowl, cream the butter and sugars with an electric mixer on medium speed.

Add  eggs, one at a time, mixing well after each addition. Mix in the vanilla, baking powder, baking soda, salt, and cornstarch.

Gradually add the flour, mixing just until blended. Stir in the chocolate chips and pecans.

Divide the cookie dough into 12 equal parts.  Roll into balls. 

Place cookie dough balls in the freezer for 10 minutes.  Remove from freezer and place 6 cookies on each cookie sheet.

Bake 20 to 25 minutes or until the edges are golden brown. Allow the cookies to cool 5 to 7 minutes on the cookie sheets.