Whoopie Pies
["2 c. flour", "1 c. sugar", "5 Tbsp. cocoa", "1 tsp. baking soda", "1/2 tsp. salt", "1 tsp. baking powder", "1/2 tsp. vanilla", "1/2 c. shortening", "2 egg yolks", "1 c. milk"]
["Sift dry ingredients together; mix well. Add liquid ingredients. Beat or mix until smooth. Drop by teaspoonfuls on ungreased cookie sheet 10 to 12 minutes or until firm."]
["flour", "sugar", "cocoa", "baking soda", "salt", "baking powder", "vanilla", "shortening", "egg yolks", "milk"]