Cocoa Spiced Bundt Cake

Name: Cocoa Spiced Bundt Cake
Ingredients: Nonstick baking spray, for the pan; 2 1/4 cups (9.5 ounces) all-purpose flour; 1 cup granulated sugar; 1/2 cup (3.75 ounces) dark brown sugar; 1 teaspoon ground star anise; 1 teaspoon smoked or regular ground cinnamon; 1 teaspoon ground nutmeg; 1 teaspoon baking soda; 1/2 teaspoon fine salt; 12 ounces root beer; 2 sticks unsalted butter; 1/4 cup (.75 ounce) cocoa powder; 2 large eggs; 1/2 cup buttermilk; 1 teaspoon vanilla extract; 1 teaspoon grated fresh ginger; 1/4 cup root beer; 4 tablespoons unsalted butter; 2 tablespoons cocoa powder; 8 ounces confectioners’ sugar, plus more for dusting; 1/4 teaspoon fine salt; 1/8 teaspoon ground star anise; 1/8 teaspoon ground nutmeg; 1/2 cup broken-up thin and crispy chocolate cookies; Whipped cream, for serving