Preheat oven to 350 Degrees F.

Spray 12" X 16" baking sheet with baking spray.

In a large mixing bowl add butter, sugar and brown sugar. Beat until fluffy and sugar granules begin to dissolve.

Add eggs, one at a time, mixing well between each addition.

Add vanilla and beat cookie dough until fluffy and sugar granules have almost disappeared. You want a smooth texture, it will not be as grainy as when making other chocolate chip cookie recipe.

Add baking soda and beat until incorporated.

Add flour and mix just until flour has been blended well.

Add chocolate chips and mix just until chocolate chips are spread through the batter. Over-mixing after flour addition will result in tough cookies.

Spread cookies on the prepared baking sheet. Use hands damped with water if necessary to get it spread evenly to the edges.

Place in preheated 350 Degrees F and bake for 24 to 28 minutes, or until edges are golden brown and middle does not look wet.

Remove from oven and allow to cool on a cooling rack for at least 20 minutes before attempting to cut.