Mix the grated coconut, 150 g sugar, 50 g flour, vanillin sugar and 3 eggs to a macaroon mixture. Pour the mixture into a piping bag with a perforated spout. Coarsely chop the chocolate coating. Melt butter and chocolate coating in a small pot at low heat while stirring
Mix the chocolate mixture and 7 eggs in a large bowl with the whisk of the hand mixer. Add 300 g sugar, salt, 350 g flour and baking powder and mix to a smooth dough. Grease the fat pan of the oven (32 x 39 cm) and dust with flour. Spread the dough evenly over it
Spray the macaroon mass as small tuffs close together on the dough. Bake the cake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 25 minutes. Remove from the oven and let it cool down on a cake rack. Whipped cream tastes good with it