1 tsp. vanilla
1 c. sugar
1/2 c. shortening
2 egg yolks

Beat until light yellow color.

Sift together:

5 tbsp. cocoa
1 tsp. baking powder
1 tsp. baking soda
2 c. flour
1 tsp. salt

Add alternately 1 cup of milk to cream mixture. Drop by teaspoonful onto ungreased cookie sheet. Bake 375 degrees for 10 minutes.

WHOOPIE PIE FILLING:

3/4 c. shortening
1/2 tsp. salt
2 egg whites
1/2 tsp. vanilla
2 c. confectioners' sugar

Put all ingredients in a bowl together and beat until thick and creamy.