What is the highest calorie cake? Exploring the most decadent delights
                                
                                
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                                    3 min read                                
                            
                                According to a CBS News report, a single slice of Philadelphia's legendary Pumpple Cake can pack over 1,800 calories, making it a strong contender for the title of the highest calorie cake. This remarkable creation, which contains two different pies baked inside a cake, serves as a prime example of how decadent ingredients can dramatically increase a dessert's caloric load.