Preheat the oven to 350 degrees.
Grease bottom of 15½ x 10½ x 1 inch baking pan. Line with waxed paper or spray with nonstick cooking spray.
In a large bowl, combine butter and sugars. Beat until creamy, about 2 minutes.
Add eggs, one at a time, beating well after each addition.
Add vanilla extract and salt. Mix well.
Gradually add flour. Stir in 1 cup of Nestle mini chocolate chips.
Spread batter into prepared pan. Bake at 350 degrees for 20-25 minutes. Cool completely.