Preheat oven to 350°F (175°C). Grease an 8 x 4 x 3-inch loaf pan.

Sift flour into a bowl.

Measure the sifted flour.

Add baking powder, salt, and soda to the flour.

Sift the dry ingredients again to combine thoroughly.

In a separate bowl, cream together the butter.

Gradually add the light brown sugar to the creamed butter.

Cream together the butter and sugar until light and fluffy.

Add the eggs to the butter and sugar mixture.

Beat the eggs in well.

Stir in the chopped nuts and grated orange rind.

Alternately add the flour mixture and the mashed bananas to the wet ingredients, starting and ending with the flour.

Add a small amount of flour and banana at a time.

Beat after each addition only until smooth and just combined. Do not overmix.

Pour the batter into the prepared loaf pan.

Bake in the preheated oven for 55 minutes, or until a toothpick inserted into the center comes out clean.