In very large bowl, and I do mean VERY LARGE, beat butter and sugar until light and fluffy.
Beat in eggs, 2 TBLS.
Of the milk and vanilla until smooth.
In large bowl, and I do mean VERY large bowl.
mix flour; baking powder and salt until light and thoroughly combined.
Gradually beat flour mixture in to butter mixture.
If dough seems a bit dry, add another tablespoon or two of the milk.
Gather dough into a ball and divide into 8 parts.
Wrap each part in plastic wrap or foil and refrigerate 8 hours or longer.
The dough may also be frozen and thawed in the refrigerator.
When ready to bake, remove dough from refrigerator one part at a time.
Preheat oven to 350F Roll with a very, very well floured rolling pin to approximately 1/4 thickness (I like these a little thicker) on a very, very well floured surface.
Cut into desired shapes, place on a lightly greased cookie sheet and bake 10-12 minutes.