Finely grind the walnuts and mix with breadcrumbs. Melt 50 g dark chocolate coating on a hot water bath. Separate the eggs. Beat egg yolks, liquid chocolate coating, butter, sugar and salt until foamy. Beat the egg whites until stiff. Add vanillin sugar. Fold the beaten egg whites and walnut mixture into the egg yolk mixture.
Pour into greased and sugar-scented moulds (125-200 ml capacity). Place the moulds on a greased pan filled with hot water and cook in a preheated oven (electric range: 150 °C/ convection oven: 125 °C/ gas: level 1) for 20-25 minutes, depending on the size of the moulds. In the meantime, chop 100 g of dark chocolate and white chocolate for the sauce. Bring the cream briefly to the boil, melt the chocolate coating in it. Turn the ramekins out onto dessert plates. Cover with the chocolate sauce. Dust small cocoa hearts with a stencil and serve dessert sprinkled with chocolate rolls