I pawrused the Internet, and found a recipe on Mumsnet (I'm sure that's a spelling mistake and should read bearsnet!)
Anyhoo, if you fancy baking along:
60g chocolate chips (dark ones work really well)
250g bananas (two or three) weighed after peeling (ripe or overripe work well) and mashed with a fork
2 large eggs
125ml vegetable oil
150g caster sugar
225g self-raising flour
1/2 tsp bicarbonate of soda
Mmmm choc chips, should I try one
I whisked together the oil, eggs and sugar.
Then added the flour and bicarbonate of soda, mixing until just combined. Finally I added the mashed banana and chocolate chips.
I cooked -the muffins, not me - in the oven at 180 degrees, for 25 minutes. I checked the muffins were completely cooked by inserting a skewer into the middle, I was tempted to just stick my paw in, but thought it might get a bit burnt.
I placed the muffins on a cooling tray, oooh my kitchen smelled like a little bit of heaven.
One for each paw, mmm.
With love from the bears