Preheat oven to 375
Spray cookie sheet with nonstick cooking spray or line with parchment paper.
In a large mixing bowl, combine butter and sugars and beat until smooth.
Add vanilla and eggs. Mix until incorporated.
Sprinkle in baking soda and salt, stir.
With mixer on low speed, gradually add flour one cup at a time, combining well after each addition. Mix until a soft ball forms.
Stir in chocolate chips.
Roll into balls and place on prepared baking sheets.
Bake for 7-9 minutes, or just until edges begin to turn golden brown.
Remove from oven and transfer to wire rack to cool.
