This classic hazelnut cake recipe is a must-try for all hazelnut lovers. The cake is made with ground hazelnuts, giving it a rich and nutty flavor. It's perfect for any occasion, from birthdays to holidays. The cake is moist and tender, and the hazelnut flavor is complemented by a light and fluffy buttercream frosting. This recipe is easy to follow and will impress your guests with its delicious taste and beautiful presentation.