Combine flour, baking
powder, CREAM OF TARTAR, and CINNAMON in a medium bowl.
In a large mixing
bowl, beat butter until creamy, add sugar and beat until light and fluffy,
about 3 minutes with an electric mixer.
Add eggs, milk
and vanilla and beat slowly at first until the liquid starts to become incorporated,
then beat well until combined, scraping the bowl occasionally.
Add flour mixture,
gradually beating until combined. Scrape the bowl to make sure
that all of the flour is incorporated.
The dough may be refrigerated at
this time to make it easier to work with because it is a soft dough, but
this step is not necessary.
Form dough into golf ball sized balls, roll
in CINNAMON SUGAR, and place on an ungreased cookie sheet. Flatten the
cookies with the bottom of a glass to about ¼ inch thickness.
for 11-14 minutes until golden. Remove from pans and cool.
36 large cookies
Prep. time: 10 minutes plus chilling time
Baking time: 11-14 minutes per pan