This recipe comes from an old Mennonite cookbook from Steinbach Manitoba called the Christian Home Cookbook given to me by my mother-in-law.
I've used this recipe as is for many years. They are a great tasting cookie that can be cooked even in the hot summers when you don't want to turn your oven on. It takes about 15 minutes to prepare and 15 minutes to put onto the sheets. It can get a bit messy, but licking chocolate off fingers is okay when you are the cook.
Make sure you don't let the milk mixture boil too much. Just bring it to a boil for less than 1 minute or your cookies will be dry. Also, if you use light milk you can add cream to the milk to make a more rich tasting cookie.