Mexican Chocolate Shortbread Cookies

Bahan-bahan (24 porsi)

• 2 cups all purpose flour
• 2/3 cup lightly packed unsweetened cocoa powder
• 1 tablespoon ancho chile powder
• 1/2 teaspoon ground cinnamon
• 1/2 teaspoon salt
• 1/4 teaspoon freshly ground black pepper
• 1 cup (2 sticks) unsalted butter, (at room temperature)
• 10 tablespoons granulated white sugar
• 2 teaspoons vanilla extract
• additional sugar for coating the cookies