Pumpkin Whoopie Pies

Name: Pumpkin Whoopie Pies
Prep time: 45 min
Total time: 45 min
Cuisine: American
Ingredients: 224 grams all purpose flour (1 3/4 cups); 1 teaspoon baking powder; 1 teaspoon baking soda; 1 teaspoon ground cinnamon; 1 teaspoon ground ginger; 1/2 teaspoon ground cardamom; 1/4 teaspoon ground nutmeg; Pinch ground cloves; 1/2 teaspoon kosher salt; 170 grams unsalted butter (3/4 cup), melted and cooled; 150 grams dark brown sugar (3/4 cup, packed); 50 grams granulated sugar (1/4 cup); 225 grams pumpkin purée (1 cup); 2 large eggs, at room temperature; 335 grams confectioner’s sugar (2 1/2 cups); 30 grams unsweetened cocoa powder (1/4 cup); 113 grams unsalted butter (1/2 cup; 1 stick), softened; 60 milliliters whole milk (1/4 cup), plus more to adjust consistency; 2-3 drops ginger oil, optional; 20 grams finely chopped candied ginger, store bought or homemade (2 tablespoons)