1 c. shortening or butter
1 c. sugar
2 egg yolks
1 c. milk
2 c. flour
5 tbsp. cocoa
1 tsp. baking soda
1 tsp. baking powder
1/2 tsp. salt
1/2 tsp. vanilla

Mix well all ingredients. Drop by spoonful on pan ungreased. Bake at 375 degrees for 10 to 12 minutes. Let cool.

FILLING:

2 egg whites
2 c. powdered sugar
1 tsp. vanilla
1/4 tsp. salt
1/2 c. shortening

Mix until smooth. Spread filling on one cookie, top with another cookie for a sandwich style.