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

FILLING:

3/4 c. butter
1/2 tsp. vanilla
1 1/3 c. powdered sugar
8 oz. marshmallow fluff

To make cake: Cream butter, sugar and egg. Add cocoa. Stir together dry ingredients. Add to butter mixture. Alternate with milk and vanilla. Drop by teaspoonful onto greased cookie sheet. Bake at 400 degrees for 7 to 9 minutes. Cool. Prepare filling. Place filling between 2 cakes to form a sandwich.