Pumpkin Whoopie Pies

Name: Pumpkin Whoopie Pies
Prep time: 40 min
Cook time: 14 min
Total time: 54 min
Cuisine: American
Ingredients: 2 cups light brown sugar ( packed ); 1 cup vegetable oil; 1 ½ cups canned pumpkin ((not pumpkin pie filling)); 2 large eggs; 1 teaspoon vanilla extract; 3 cups all-purpose flour; 1 Tablespoon ground cinnamon; ½ Tablespoon pumpkin pie spice; 1 teaspoon salt; 1 teaspoon baking powder; 1 teaspoon baking soda; 1/2 cup salted butter (softened ); 1 block (8 ounces) cream cheese (softened ); 3 cups of powdered sugar; 1/2 Tablespoon vanilla extract