FOR THE PUMPKIN WHOOPIE COOKIES
3 cups all-purpose flour
1 teaspoon salt
1 teaspoon baking powder
1 teaspoon baking soda
2 tablespoons ground cinnamon
1 tablespoon ground ginger
1 tablespoon ground cloves
2 cups firmly packed dark-brown sugar
1 cup vegetable oil
3 cups pumpkin puree, chilled
2 large eggs
1 teaspoon pure vanilla extract
FOR THE CREAM-CHEESE FILLING
3 cups confectioners’ sugar
1/2 cup (1 stick) unsalted butter, [...]