Preheat oven to 350 degrees F (175 degrees C). Lightly grease baking sheets.
Combine the oil and brown sugar. Mix in the pumpkin and eggs, beating well. Add the flour, salt, baking powder, baking soda, 1 teaspoon vanilla, cinnamon, ginger and cloves. Mix well.
Drop dough by heaping teaspoons onto the prepared baking sheets. Bake at 350 degrees F (175 degrees C) for 10 to 12 minutes. Let cookies cool then make sandwiches from two cookies filled with Whoopie Pie Filling.
To Make Whoopie Pie Filling: Beat egg white and mix with the milk, 1 teaspoon vanilla and 1 cup of the confectioners’ sugar. Mix well then beat in the shortening and the remaining cup of confectioners’ sugar. Beat until light and fluffy.
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