Pumpkin Whoopie Pies
["2 egg yolks", "2 c. brown sugar", "1 c. vegetable oil", "1 tsp. cinnamon", "1 tsp. ginger", "1 tsp. cloves", "1 tsp. salt", "1 tsp. baking powder", "1 tsp. baking soda", "1 tsp. vanilla", "2 c. pumpkin", "3 c. flour"]
["Combine egg yolks, brown sugar and oil; beat with electric mixer until smooth.", "Sift together dry ingredients and combine with egg mixture; alternate with pumpkin.", "Add vanilla.", "Bake in 6-inch circles on greased cookie sheet at 350\u00b0.", "Remove from pan immediately."]
["egg yolks", "brown sugar", "vegetable oil", "cinnamon", "ginger", "cloves", "salt", "baking powder", "baking soda", "vanilla", "pumpkin", "flour"]