Banana Gingerbread Cupcakes

Name: Banana Gingerbread Cupcakes
Ingredients: Cupcakes:; 1½ cups all-purpose flour; 1½ teaspoons baking powder; 1½ teaspoons ground cinnamon; ¼ teaspoon ground cloves; ½ teaspoon kosher salt; ¾ cup packed dark brown sugar; ½ cup vegetable oil; ½ cup molasses; 1 large egg plus 2 large egg yolks, room temperature; 1½ cups mashed banana; ¼ cup sour cream; 3 tablespoons peeled minced fresh ginger; Frosting:; 1 cup confectioner’s sugar; 1 to 2 tablespoons whole milk; ¼ teaspoon pure vanilla extract; ⅛ teaspoon kosher salt; Ginger cookies, optional