My elderly neighbour has just given me about 20 overripe bananas 
I thought I could make cakes with some of them, and freeze them.
I usually make a simple cake mix with 4oz each of butter, flour and sugar, and two eggs. How many mashed bananas should I add to that? I thought one or two. Should I also reduce he sugar given bananas are quite sweet? Maybe 2oz of sugar?
Is there a better recipe that I could be using, maybe with a few spices or something? Or any other ideas for using up lots of bananas?