For the dough, beat 6 egg yolks with 60 g sugar and some lemon zest until foamy. Beat 6 egg whites with 60 g sugar until stiff. Now gently stir the whites into the yolks and then fold in the sifted flour.
Line a 30 × 40 cm baking pan with a higher edge with baking paper and spread the sponge mixture on the bottom. Bake at 180 °C for about 12-15 minutes with hot air. Allow to cool.
For the custard, make the custard according to package directions and let cool. Stir again and again so that no skin forms.
Rub butter and sugar well and mix with the almost cold pudding.
Peel about six bananas, cut in half and slice finely. Cover the pastry with the sliced bananas.
For the glaze, break the chocolate into small pieces, melt with the butter in a warm water bath. Then add the sugar and milk and mix to a smooth sauce until the sugar is well dissolved….
Spread the cooled cream on top. Finally, cover with the glaze.
Let the banana slices sit for a bit. Preferably overnight.