I had been craving chocolate cake for a couple weeks and this past weekend when I was looking for something to make I knew it had to be cake. I love the combination of chocolate and hazelnuts, but I wasn't able to find a recipe that included both, so I had to improvise. I used this recipe for the cake part and added toasted hazelnuts into the batter. Then, I made a hazelnut buttercream by using this recipe for the buttercream and added hazelnut praline to it. I made the hazelnut praline by combining toasted hazelnuts and sugar in a food processor for about 3-5 minutes, until it was creamy. To assemble the cake I spread each layer with the hazelnut buttercream and a thin layer of nutella. The result was delicious!