This hazelnut and chocolate cake is a delicious dessert that combines two classic flavors. The cake is made with hazelnut flour, sugar, eggs, and butter. The chocolate frosting is made with chocolate, butter, and powdered sugar. To make the cake, you need to mix the dry ingredients in one bowl and the wet ingredients in another bowl. Then, you combine the two mixtures and bake the cake in the oven for about 30 minutes. Once the cake is cooled, you can frost it with the chocolate frosting. This cake is perfect for any occasion and will satisfy any chocolate lover.