Instructions:
- Preheat oven to 175°C. Grease and line a loaf tin.
- Mash bananas thoroughly in a large bowl.
- Whisk in melted butter, sugar, eggs and vanilla.
- Fold in flour, baking soda and salt until just combined — do not overmix.
- Fold in walnuts if using.
- Pour into loaf tin and bake for 55–65 minutes until a skewer inserted in the center comes out clean.
- Cool in the tin for 10 minutes, then turn out onto a wire rack. Slice and serve warm with butter.
