01 -
Preheat oven to 175°C and line baking sheets with parchment paper.
02 -
Beat butter and 300 grams granulated sugar until creamy. Scrape down the bowl to ensure even mixing.
03 -
Add eggs and vanilla extract to the butter mixture; blend thoroughly.
04 -
In a separate bowl, whisk cocoa powder and flour. Create a well in the center.
05 -
Add cream of tartar, baking soda, baking powder, and kosher salt into the well and mix gently before combining with wet ingredients. Optionally, add cayenne pepper to taste.
06 -
Gradually incorporate the dry mixture into the wet ingredients, mixing just until combined. Scrape the bowl to ensure homogeneity.
07 -
Refrigerate dough for up to 48 hours to enhance flavor, or proceed to baking immediately.
08 -
Shape dough into rounded portions of approximately 30 to 45 grams each.
09 -
In a shallow dish, combine 50 to 67 grams granulated sugar with cinnamon.
10 -
Roll each dough ball in the cinnamon sugar mixture until evenly coated.
11 -
Place coated dough balls on prepared baking sheets, spaced approximately 5 centimeters apart.
12 -
Bake for 10 to 12 minutes, until edges are set and centers remain soft.
13 -
Allow cookies to rest on the baking sheet for two minutes.
14 -
Transfer cookies back to the cinnamon sugar mixture and coat the top surface while still warm for optimal adherence.
15 -
Place cookies on a wire rack to cool thoroughly before serving.
16 -
Enjoy the cookies warm for the best texture and flavor.