Preheat the oven to 350 degrees Fahrenheit. Butter and flour 5x9 in loaf pan. Line the bottom with parchment paper. You can also use a smaller sized loaf pan. Set aside.
In a medium sized bowl, combine the flour, baking soda, spices and salt. Set aside.
In a bowl of an electric mixer fitted with a paddle attachment, add mashed bananas, or if you’re lazy like me, let the machine mash them on medium speed. Add the melted butter to the bananas.
Mix in the sugar, beaten egg, orange zest, orange juice vanilla extract and rum. Reduce the speed of the machine to low.
On low speed, add the flour mixture and mix just until moistened. You should still see dry flour bits.
Fold in the cranberries with a spatula just until incorporated. Be careful not to over mix. Pour mixture into a buttered loaf pan.
Bake for 1 hour, or until an inserted toothpick comes out clean. Be sure to test other areas of the loaf to make sure. I inserted a toothpick and mistakenly poked bananas which remain wet even after baking.
Allow to cool in the pan for about 10 minutes, and then cool on a rack. Slice, and enjoy.
Cooking time (duration): 10 minute prep, plus 1 hour bake time