Mash the bananas, if they are not ripe enough chop them up into small pieces.
Weigh out your ingredients.
Once all weighed and measured, put all the ingredients in a mixer. Don't put the chocolate chips in, they go in later!
Mix the ingredients, leave the mixer on a little while so the mixture can get some air.. This will help it raise in the tin.
Put the cake mixture into a baking tin, now you can mix the chocolate chips in! I also put a few walnuts in but that's totally up to you.
Put the tin in the oven on 160 degrees and be on a fan setting. I always set my timer for an hour but it might need more. When you stick the knife in to check the cake, it should come out clear.
Finished :-) leave to cool and enjoy with a nice cup of tea.