Heat oven to 350 degrees. Empty cake mix into a large bowl set aside. In a small bowl whisk together the eggs and vanilla, pour into cake mix, add the butter. Beat with and electric mixer on medium speed until smooth. Using a wooden spoon, stir in the chocolate chips a little at a time.

Drop by rounded tablespoons 2 inches apart on an un-greased cookie sheet.

Bake 9 to 11 minutes, or until edges are set. Cool for 1 minute, then transfer to a wire rack.