Preheat oven to 350F (175C).
Grease a 9x5 inch (23x12 cm) loaf pan.
Place banana, coffee, and vegetable oil in a blender and turn on high until it emulsifies into a thick cream, about 1 minute.
Whisk sugar, flour, baking soda, and baking powder in a large bowl. Add the banana cream and mix well with a wooden spoon or spatula until you get a smooth batter, about one or two minutes. Do not overmix it. Gently fold the figs and walnuts and pour the batter into the loaf pan. Bake it for 30 minutes or until a wooden stick inserted in the center of the loaf comes clean.