This is an old family favorite!
1 cup butter (room temperature)1½ cup sugar
2⅔ cup flour
2 tsp. cream of tartar
1 tsp baking soda
½ tsp salt
Mix butter, sugar, and eggs thoroughly. Sift dry ingredients and add to cream mixture. Refrigerate for 30 minutes. Roll into balls (walnut size) then roll into mixture of 2 TB sugar and 2 tsp. cinnamon. Place 2 inches apart on ungreased baking sheet. Bake at 350° for 12 minutes or until golden brown but still soft.