6 tbsp. shortening
1 egg
1 tsp. salt
2 c. flour
1 tsp. vanilla
1 c. sugar
1 1/4 tsp. baking soda
1 c. milk
5 tbsp. cocoa

Cream shortening and sugar. Add slightly beaten egg and vanilla. Sift dry ingredients and add to egg mixture alternately with milk. Drop on on greased cookie sheet. Leave room for spreading.

FILLING:

Beat 3/4 cup shortening, 3/4 cup confectioners sugar, 1/4 teaspoon vanilla and 1 cup marshmallow fluff. Place filling on one cookie, and top with another.