This is my favorite cookie. You need to plan ahead a little, since they will not bake right if the dough isn’t chilled first, but otherwise they are very easy to make. The recipe is from a close family friend, who was kind enough to bake them for me on a frequent basis when I was a child, and then gave me the recipe when I started baking in my own kitchen.
1 cup butter
1-1/2 cups sugar
1-3/4 cups white, unbleached flour
1 cup whole wheat flour
2 teaspoons cream of tartar
1/4 teaspoon salt
1 Tablespoon brown sugar
2 Tablespoons cinnamon
Mix butter and sugar until smooth. Add eggs and beat to incorporate eggs. Add dry ingredients and stir to combine. Chill dough thoroughly, at least 1 hour.
Place about 2 inches apart on ungreased cookie sheet. Bake until light brown but still soft, 7-9 minutes at 375°F. Do no over-bake.