Pumpkin Whoopie Pies

Ingredients

• 3 ¼ cups flour (all-purpose)
• 1 teaspoon baking powder
• 1 ½ cups pumpkin purée
• 1 cup light brown sugar
• ½ cup softened butter (unsalted)
• 1 teaspoon vanilla extract
• ½ teaspoon salt
• 1 tablespoon pumpkin pie spice
• 1 teaspoon vanilla extract (for filling)
• 4 ounces softened cream cheese
• ½ teaspoon baking soda
• 2 large eggs, room temperature
• 3 cups powdered sugar
• 1 ¼ cups granulated sugar
• 1 tablespoon heavy cream
• 1 cup melted butter (unsalted)