Puree the bananas, honey, nut butter and cinnamon. Add the remaining ingredients and mix everything into a sticky mass. Place in a rectangular baking dish (lined with baking paper) and smooth out (approx. 2 cm high).

Bake in the preheated oven at 190 degrees top / bottom heat (or 170 degrees convection) on the middle rack for about 20 - 23 minutes until golden yellow. Then let it cool and cut into rectangular bars.