Banana peanut muffins

As much as I try to stick to the ingredients I have at home when baking, that doesn’t always happen: I sometimes cannot resist some fruits at the grocery store or buying another bar of chocolate and/or a jar of jam (I was much worse in the past, if that is any consolation). :)

It is like buying another book when you are not even close to finish reading the ones you already have (that, luckily,