Ingredients

  • For the cookie:
  • 2 3/4 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 teaspoons cream of tartar
  • 1 cup unsalted butter, at room temperature
  • 1 1/3 cups sugar
  • 1 1/2 teaspoons vanilla extract
  • 2 large eggs
  • For the topping:
  • 1/4 cup sugar
  • 1 tablespoon plus 1 teaspoon ground cinnamon (or to taste)

Method

  • In a medium bowl, whisk together the flour, baking soda, salt, and cream of tartar to combine. Set aside.
  • In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and the sugar together until light and fluffy, 2 to 3 minutes. Add the vanilla and mix to combine. Scrape down the sides of the bowl. Add the eggs one at a time, beating well after each addition, about 30 seconds total. Scrape down the sides of the bowl after each egg is added.
  • Add the flour mixture in two additions, scraping down the sides of the bowl each time. Mix until just blended.
  • Refrigerate the dough for at least 15 minutes (and up to 3 days if you are especially patient) to make it easier to handle.
  • When ready to bake, heat the oven to 350° F and line two baking sheets with parchment. Mix the topping ingredients in a small, shallow bowl until combined.
  • Shape a tablespoon of dough into a ball and roll in the cinnamon-sugar topping to cover. Place two inches apart on the cookie sheet.
  • Bake for 8 to 11 minutes, until the cookies are lightly colored and just firm to the touch. Cool on baking sheet for one minute before transferring to cooling rack. Cookies should stay soft for a few days if kept in a tightly sealed container.