La(s) nota(s) fácil(es)
Based on the recipe here cakespy.com
Preheat oven to 180C. Generously grease a 9×5 loaf pan or line it with oven paper.
In a pot, melt the butter with the brown sugar. Remove from heat once melty, and let it sit for a few moments.
Then, add the mashed banana and egg. Stir to combine. Add the flour and salt, and mix until just incorporated. Fold in the nuts, if using.
Pour the mixture into the prepped loaf pan, and place it on the middle rack in your oven. Bake for 25 minutes, rotating at 15 minutes or so, or until a toothpick inserted in the center comes out clean.
Remove from the oven and place the pan on a wire rack to cool. Once cooled to warm, slice and serve.