Preheat the oven to 350 F. In a large bowl, mix softened butter and sugar together until fluffy.
Add in vanilla extract, mix until smooth. Add in flour, salt, and milk, mix until a dough forms. Fold in chocolate chips.
Roll cookie dough into balls, and flatten slightly. Place 2-inches apart onto a ungreased baking sheet. Bake for 10-12 minutes.