Preheat oven to 350 degrees. Line with parchment paper.

Combine the oil and brown sugar and beat until light and fluffy.

Mix in the pumpkin.

Add eggs, one at a time, beating well after each addition.

Add the flour, salt, baking powder, baking soda, 1 teaspoon vanilla, cinnamon, and pumpkin pie spice; mix well.

Drop dough by heaping teaspoons onto the parchment-lined baking sheets.

Bake at 350 degrees for 10 to 12 minutes.

Remove from oven and let cookies cool on the pan; set aside while making filling.

<br>Filling:</br>

Beat egg white and mix with the milk, 1 teaspoon vanilla and 1 cup of powdered sugar.

Mix well, about 2 minutes.

Beat in the shortening, softened cream cheese, and the remaining cup of powdered sugar. Beat until light and fluffy.

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Make sandwiches from two cookies filled with Whoopie Pie Filling.