Grease a 20-25 cm loaf pan and line it with baking paper. Put the flour and baking powder in a bowl and work in the butter with your fingers until a crumbly mixture is formed. Add sugar, dates, bananas, honey and eggs and work into a smooth dough that drips easily from the spoon. Fill into the form and bake at 160 degrees (preheated, top / bottom heat) for about 1 hour. Allow to cool in the mold.