How Many Calories in a Piece of Black Walnut Cake? A Comprehensive Guide
                                
                                
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                                    5 min read                                
                            
                                According to a recipe published by Taste of Home, a single piece of black walnut cake contains approximately 448 calories. The exact number of calories in a piece of black walnut cake, however, can fluctuate significantly based on the recipe, the amount and type of frosting, and the size of the slice itself.