1/2 c butter
1 c brown sugar
2 eggs
2 tsp vanilla
1 1/2 c flour
1 tsp baking soda
3 T cocoa, heaping (practically a 1/4 c, very heaping T)
2 tsp cinnamon
4 bananas, mashed (either very ripe, or freeze and thaw them)

Cream butter and sugar.  Add eggs (beat them first, of course).  Add vanilla.  Sift dry ingre, then add slowly, stirring smooth each portion.  Add bananas.  Bake at 350 for 50-60 minutes.