I have a recipe from one of the Women's Weekly cookbooks..will go and find for you. I'm not a huge fan of banana cake, but this cake is just delicious! They call it bread...but I think it's more of a cake than bread!

1 cup mashed banana
3/4 cup caster sugar
2 eggs, beaten lightly
1/4 cup olive oil
1/4 cup milk
2/3 cup self-raising flour
2/3 cup wholemeal self-raising flour (I don't have this, so I just use normal SR flour)
3/4 cup coarsely chopped roasted walnuts (I've never used these either)
1/4 cup finely chopped dark eating chocolate

Preheat oven to 180C (160C fan-forced). Grease a loaf pan, line base and long sides with baking paper.
Combine banana and sugar in a large bowl. Stir in eggs, oil and milk. Add remaining ingredients and stir until combined. Spread mixture into pan. Bake for about 1 hour or until a skewer comes out clean. Stand in pan for 5 minutes then turn out onto a wire rack to cool.

They also have a whipped nut butter that is supposed to go with it, I've never made it, have just made the cake on it's own, but here it is anyway:

100g butter
1/4 cup finely chopped toasted walnuts

Beat butter in small bowl with electric mixer until light and fluffy, stir in nuts and serve with bread.