How many calories are in a slice of hazelnut cake?
                                
                                
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                                    4 min read                                
                            
                                A single 50-gram slice of a basic hazelnut cake can contain around 207 calories, but this figure can change dramatically based on ingredients. The exact number of calories in a slice of hazelnut cake varies widely, depending on whether it's a homemade recipe, a store-bought version, or a more decadent chocolate hazelnut creation.