Preheat oven to 350°F (175°C).

In a large bowl, beat softened butter, brown sugar, and granulated sugar until smooth on low speed. Add corn syrup, egg, and vanilla extract and beat well.

In a separate bowl, stir together the all-purpose flour, baking soda, and salt. Gradually add the dry ingredients to the butter mixture, beating until well combined. Stir in the milk chocolate chips.

Cover the dough and chill in the refrigerator for 30 minutes.

Roll about a tablespoon of cookie dough into a ball and place on an ungreased cookie sheet.

Bake for 15 to 17 minutes, or until lightly browned and almost set. Let cool slightly on the cookie sheet, then remove to a wire rack to cool completely before serving.