1. In a medium sized bowl, cream together the butter and sugar.
2. Add salt, vanilla and milk and beat well.
3. Mix through flour and combine well, add choc chips and mix through until evenly spread through mix. Cover with cling film and chill for 30mins.
4. Pre-heat oven to 180C. Spoon large tablespoon sized balls onto a lined baking tray/s.
5. Bake for 12-14 mins until golden. Remove from baking tray and cool.