2. Combine butter, brown sugar and sugar in large bowl. Beat at medium speed, scraping bowl often, until creamy. Add eggs and vanilla. Continue beating, scraping bowl often, until well mixed.
3. Reduce speed to low. Beat, gradually adding flour mixture, until well mixed. Stir in chocolate chips.
4. Drop dough by rounded tablespoonfuls, 2 inches apart, onto ungreased cookie sheets. Bake for 9-12 minutes or until light golden brown. (DO NOT OVERBAKE.) Let stand 1 to 2 minutes. Remove from cookie sheets.