Knead 100 g fat, 200 g flour, honey and 1 sachet of vanillin sugar into crumbles. Halve the crumbles and fold them into one half of the cocoa powder. Put light and dark crumbles in a cool place. Cream 125 g fat, 1 packet vanilla sugar, salt and sugar. Stir in the eggs one by one. Mix 250 g flour and baking powder, fold in. Drizzle bananas with lemon juice, puree and fold into the dough.
Grease a box form (30 x 11 cm; 2 litres capacity) and sprinkle with breadcrumbs. Fill in the dough and smooth it down. Spread light and dark sprinkles over it. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 1 1/4-1 1/2 hours. Take the cake out of the oven and let it rest for about 10 minutes. Then turn over and let it cool down completely
1 hour waiting time