In a medium saucepan, melt the butter over medium heat. Continue cooking, stirring constantly, until the butter turns amber in color and develops a nutty aroma (about 5-7 minutes). Remove from heat and allow to cool to room temperature.
Preheat your oven to 350°F (175°C) and line two large baking sheets with parchment paper or silicone mats.
In a small bowl, whisk together the flour, cream of tartar, baking soda, pumpkin pie spice, ground ginger and salt.
In the bowl of your stand mixer fitted with a paddle attachment or a large bowl with a handheld electric mixer, beat the granulated sugar, brown sugar, and browned butter for 2-3 minutes until the sugars have dissolved and the mixture is pale in color. oth.
With the mixer on medium speed beat in the egg and vanilla extract until the mixture is homogenous. Making sure to scrape the sides of a bowl using a rubber spatula
With the mixer on low speed gradually add the dry ingredients to the wet ingredients, stirring until combined.Do not overmix
In a small bowl, combine the cinnamon and ¼ cup granulated sugar.
Using a large cookie scoop roll the prepared dough into balls, then coat each ball generously in the cinnamon-sugar mixture.
Place the dough balls on the prepared baking sheet, about 2 inches apart. Bake for 10-12 minutes, or until the edges are set and the centers are soft.
Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.