I found that the dough was a little dry so I did add a little bit of milk. This turned out good and I might make it again.
The next cookie also uses only four ingredients, I found the recipe here.
With this recipe the ingredients are giving in grams. It is a good thing I had a scale. If you don't own a scale here is the approximate measurements I used.
Butter - 1 stick
Sugar - 1 cup
Flour - 2 cups
pinch of salt
I also used an oven temperature of 325 degrees and cooked them for about 12 minutes.
After mixing all the ingredients, I found the dough still a little sticky to roll out so I added a little more flour. I also found this cookie mildly sweet, but still good.