Ingredients
1 1/2 cups unbleached all-purpose flour
1/4 cup unsweetened Dutch-process cocoa powder
1 teaspoon ground cinnamon
1/2 teaspoon kosher salt
1/4 teaspoon cayenne pepper
1 teaspoon baking soda
1 stick unsalted butter, room temperature
1 cup packed dark-brown sugar
1 large egg, room temperature
1 teaspoon pure vanilla extract
12 ounces semisweet chocolate (61 percent cacao), chopped (2 1/3 cups)
1/2 cup turbinado sugar
Preparation
Preheat oven to 325 degrees. Whisk together flour, cocoa, cinnamon, salt, cayenne, and baking soda.
In a separate bowl, beat butter with brown sugar on medium-highspeed until light and fluffy, about3 minutes. Beat in egg and vanillauntil well combined. Reduce speedto low and beat in flour mixture untiljust incorporated. Stir in chocolate.
Roll dough into 1-inch balls(each 1 heaping tablespoon).Gently roll each in turbinado sugarto coat; place 2 inches aparton parchment-lined baking sheets.Bake until surfaces crack slightly,11 to 14 minutes. Let cool 5 minuteson sheets, then transfer to awire rack and let cool completely.