• Preheat the oven to 350 degrees Fahrenheit. Line a cookie sheet with parchment paper.
• Cream the butter and sugars in a large mixing bowl for 2 to 3 minutes, until light and fluffy. 1 cup Unsalted Butter, 1 cup Granulated Sugar, 1/2 cup Brown Sugar
• Add in the eggs, and vanilla extract and mix until combined. 2 large Eggs, 2 tsp Vanilla Extract
• In a large bowl, shift together the flour, cocoa powder, cream of tartar, baking soda, cinnamon, red cayenne pepper, and salt. 2 3/4 cup All Purpose Flour, 1/2 cup Unsweetened Cocoa powder, 1 tsp Cream of Tartar, 1 tsp Baking soda, 1 tsp Ground Cinnamon, 1/4 tsp Red cayenne pepper, 1/2 tsp Salt
• Slowly add the dry ingredients to the wet ingredients, mixing until you have a thick cookie dough.
• Scoop about 1.5 Tablespoons of batter, then roll it into a ball.

For Rolling:

• Combine the sugar and cinnamon in a small bowl and whisk together. 1/3 cup Granulated Sugar, 1/2 TBS Ground Cinnamon
• Dip balls in cinnamon sugar mixture and roll around to coat. Place the cookies on the prepared cookie sheet a couple inches apart.
• Bake for 8-10 minutes until the tops of the cookies are cracked and the sides are set.
• Let the cookies cool on the cookie sheet for 5 to 10 minutes, then carefully transfer them to a cooling rack to enjoy or cool completely.