❶ In a stand mixer, cream together one stick of butter, 1/2 cup sugar, and 1/2 cup brown sugar until smooth and creamy.
❷ Add in one egg, one cup molasses, and one cup pumpkin puree.
❸ Mix in two cups flour, 1/2 tablespoon cinnamon, one teaspoon baking soda, 1/2 teaspoon nutmeg, 1/2 teaspoon ginger, and 1/2 teaspoon salt until fully combined.
❹ Use an ice-cream scoop to portion batter onto a greased baking sheet.
❺ Bake at 350°F for about 10 to 12 minutes, or until the cakes are springy to the touch.
❻ In a separate mixing bowl, use a paddle attachment to mix 16 ounces cream cheese, two teaspoons lemon zest, 3/4 cup sugar, and two teaspoons vanilla extract until smooth and combined.
❼ Sandwich the filling between two whoopie pie cakes.
