Preheat oven to 350 degrees F.
Pour cake mix into a large mixing bowl.
Melt 1 stick of margarine and add to cake mix.
Lightly beat eggs and add to mix. Stir well -- this will form a sticky dough.
Roll dough into 32 balls about 1 inch in diameter. Place 2 inches apart on ungreased cookie sheets.
Bake for 8 minutes. Cool cookies completely.
Cream together the remaining stick of margarine, cocoa and powdered sugar. Add milk if necessary so the filling is of spreading consistency.
Spread about 1 teaspoon of filling onto 16 cookies. Top with remaining cookies. Decorate with filling thinned with a small amount of milk, if desired.
Source: Spoonful.com
