Grease an ovenproof rectangular form (approx. 25 x 30 cm; 3 l capacity) well. Caramelise 200 g sugar until golden, add 1 tbsp. butter and honey, simmer until butter has melted. Pour caramel into the mould. Peel bananas, cut into slices and spread on the caramel.
Chop dark chocolate and melt with 200 g butter in a hot water bath. Preheat the oven (electric cooker: 180 °C/circulating air: 160 °C/gas: see manufacturer). Mix flour, pudding powder and baking powder.
Beat the eggs and 200 g sugar with the whisk of the mixer until light creamy. Stir in the chocolate-butter mixture. Stir in the flour mixture briefly. Put the dough into the form and smooth it down. Bake in a hot oven for 35-40 minutes. Turn the cake out of the tin immediately and let it cool down.