Cream sugar and butter together.
Add eggs and blend well.
Add remaining ingredients and blend by hand.
Pour into greased and floured pan (13 by 9 by 2 inches).
Bake at 350° for 25 -30 minutes.
When cake is done, immediately cover top of cake with 1 bag of miniature marshmallows. Do not remove cake from pan.
Pour icing over cake after cooling.
Sift cocoa and sugar together, then add other ingredients and blend well.
Pour over marshmallows.