1/2 c. soft butter
1 c. sugar
1 egg
1 tsp. vanilla
1/2 c. milk
2 c. flour
1/2 tsp. baking powder
1 1/2 tsp. baking soda
1/2 tsp. salt
1/2 c. cocoa

Mix wet ingredients, then dry ingredients. Beat until smooth. Drop by rounded teaspoons onto buttered cookie sheet. Bake at 400 degrees for 7 minutes. Cool. Fill with filling and make a sandwich.

FILLING:

1/2 c. shortening
2 c. confectioners' sugar
1 c. marshmallow fluff
1 tsp. vanilla
3 to 4 tsp. milk