@rumtscho
This is the base recipe, though the book version has 3.5 oz of coconut oil (I love using unrefined because the flavor is amazing) and 1/8 tsp nutmeg (which I ended up leaving out accidentally). To make the banana nut version, you mash 5 oz of banana (~1.5) with 1/4 tsp ground cloves and add those after the egg. Then you add 6 oz chopped toasted walnuts (I used untoasted pecans) at the very end before portioning.