Peel the banana and measure. The recipe called for 1.5 cups or 450 gms. However, I had only about 310 gms, approx 2 long ones. I increased the butter to 160 gms. You can use about 1/2 cup (113g) of butter.
Since the bananas I had were not fully overripe, I microwaved it for 1.5 mins.
Preheat the oven to 185C. Line a 9" X 4" loaf pan with parchment paper
In a large bowl, sift the flour, baking powder, baking soda, cinnamon, and ginger
In a mixing bowl beat butter and sugar, until the mixture is fluffy.
Next mix in the bananas and blend well.
Using a spatula combine the dry ingredients to the wet ingredients. Gently fold in the milk.
Fold in the crushed walnuts. The batter will be thick.
Transfer the batter into the prepared loaf pan and bake at 185C for 40 minutes.