Pumpkin whoopie piesPie3 cups all-purpose flour1 teaspoon baking soda1 teaspoon baking powder1/2 teaspoon salt1 cup brown sugar1 cup sugar1 cup vegetable oil1 (15-ounce) can pumpkin2 large eggs1 teaspoon vanilla extract Pre-heat oven to 350 degrees. Beat together brown sugar, sugar, oil and pumpkin. Add eggs one at a time, mixing well after each addition, followed by the vanilla.