Heat oven to 350 degrees mix butter, sugars, vanilla and eggs in large bowl using spoon or mixer, using spoon stir in flour, baking soda and salt. Stir in chocolate chips. Drop dough by rounded measuring tablespoonfuls about 2 inches apart onto ungreased cookie sheet. Bake 10 to 12 minutes or until very light brown. Cool slightly. Remove from cookie sheet to wire rack; cool.