Preparation Steps

• Preheat oven to 375°F (190°C). Line baking sheets with parchment paper.
• In a medium bowl, whisk together flour, cream of tartar, baking soda, and salt.
• In a large bowl, cream together butter and 1.5 cups sugar until light and fluffy.
• Beat in eggs one at a time until fully combined.
• Gradually mix in the dry ingredients until just combined.
• In a small bowl, combine 0.25 cup sugar with 2 teaspoons cinnamon for coating.
• Roll dough into 1.5-inch balls, then roll each ball in the cinnamon sugar mixture.
• Place balls on prepared baking sheets about 2 inches apart.
• Bake for 8-10 minutes until edges are set and cookies are puffed.
• Allow cookies to cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.