Melt the fat and mix with the sugar. Squeeze the bananas. Mix the flour with the baking powder. Mix the moist and dry ingredients quickly with a wooden spoon.
Put the dough in a loaf pan lined with baking paper and bake in a preheated oven at 150 ° C top / bottom heat for about 60 minutes. Make a chopstick test.
Lift out of the mold and let cool on a wire rack. It tastes best when it is lukewarm, but is also a wonderful breakfast bread when cold.