Preparation Steps

• Brown the butter in a saucepan over medium heat until it has a nutty aroma and golden brown color. Remove from heat and let it cool.
• In a large bowl, whisk together the browned butter and granulated sugar until combined.
• Add eggs one at a time, mixing well after each addition.
• In a separate bowl, sift together flour, cream of tartar, baking soda, and salt.
• Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
• In a small bowl, combine the ground cinnamon and remaining sugar for rolling the dough balls.
• Preheat oven to 350°F. Roll dough into 1 inch balls, then roll each ball in the cinnamon sugar mixture.
• Place dough balls 2 inches apart on a baking sheet lined with parchment paper.
• Bake for 10 to 12 minutes or until edges are set and centers look slightly underbaked.
• Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.