I don’t buy anymore Kinder Pinguin. I’ve discovered how to prepare it at home!

I don’t buy anymore Kinder Pinguin. I’ve discovered how to prepare it at home! Ingredients: for the cake top: eggs - 6 pieces sugar - 250 g (8.8 oz) milk - 250 ml ( fl oz) flour - 250 g (8.8 oz) baking powder - 20 g (0.7 oz) cocoa - 80 g ( oz) Tray size 32 x 42 cm (12 x in) In the oven 180°C (356 °F) for 25 min