Whoopie Pies
["1/2 c. shortening", "1 c. sugar", "1 egg", "2 c. flour", "1/2 c. cocoa", "1/4 tsp. salt", "1/2 tsp. soda", "1 c. milk", "1 tsp. vanilla"]
["Cream the shortening and sugar. Sift and add the flour, cocoa, salt and soda. Add milk and vanilla. Drop by teaspoonfuls on greased cookie sheet. Bake at 425\u00b0 for 7 minutes. When cooled, fill with filling."]
["shortening", "sugar", "egg", "flour", "cocoa", "salt", "soda", "milk", "vanilla"]