In a mixing bowl beat butter and add eggs one by one. Now add milk and a few drops of vanilla essence.
Sift together flour, salt, and baking powder. Mix in sugar to this.
Now mix both the mixtures together stirring continuously.
Add chocolate chips and walnuts.
Pour this mixture into greased muffin moulds, and bake at 375°F for 15-20 minutes or till done.
Remove and let them cool.