Pumpkin Whoopie Pies

Cake Ingredients:
3 cups flour
1 1/2 cups sugar
1 1/4 tsp oil
3 1/2 tsp. cinnamon
2 tsp. baking soda
2 tsp. baking powder
1 tsp. salt
4 eggs
2 cups canned pumpkin

Filling:
2 egg whites
4 tsp. vanilla
4 tsp. milk
4 cups powdered sugar
1 1/2 cups Crisco shortening

Preheat oven to 350 degrees. Blend sugar and oil; add eggs and beat well. Add pumpkin and mix well. Add dry ingredients, mixing thoroughly. Drop by rounded tablespoonfuls onto a greased cookie sheet. Bake for 10 minutes. Remove and cool on wire rack.

Beat egg whites until foamy. Add remaining ingredients and beat until fluffy. Spread onto cooled cake rounds and make sandwiches. Wrap each cake with plastic and store in a cool place.