Preparation Steps

• Preheat the oven to 350 degrees F (175 degrees C). Prepare two baking sheets with parchment paper or silicone mats.
• In a large bowl, beat together the softened butter and granulated sugar until light and fluffy, about 2-3 minutes.
• Beat in the large eggs one at a time until well combined.
• In a separate medium bowl, whisk together the all-purpose flour, cream of tartar, baking soda, and kosher salt.
• Gradually add the dry ingredients to the wet ingredients, mixing until just combined and a dough forms. Do not overmix.
• In a small bowl, combine the 0.5 cup of granulated sugar and 2 teaspoons of cinnamon for the coating.
• Using your hands or a small cookie scoop, roll rounded tablespoons of dough into balls.
• Roll each dough ball generously in the cinnamon-sugar mixture.
• Place the coated dough balls about 2 inches apart on the prepared baking sheets.
• Bake for 8 to 10 minutes, or until the edges are lightly golden and the centers are no longer doughy.
• Let the cookies cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.