In your mixer, combine the sugars and butter. Mix well. Then add the vanilla and eggs. Mix really well. Be sure you don't have any lumps in your batter from the brown sugar.

Add half of the flour mixture into your mixer. Mix until just combined. Then add the other half. Lastly, add your chips and mix once more.

Spray 2 baking sheets with non stick spray. Bake at 350 for 11 minutes for small cookies, or until just done. Cool on a rack.