→ Cake Layer
                    
                      
                        01 - 
                        1 box (15.25 ounces) chocolate cake mix
                      
                    
                      
                        02 - 
                        Water, oil, and eggs as called for on cake mix box
                      
                    
                  
                    → Filling
                    
                      
                        03 - 
                        2 sticks (8 ounces) unsalted butter, room temperature
                      
                    
                      
                        04 - 
                        2 cups powdered sugar
                      
                    
                      
                        05 - 
                        ¼ teaspoon kosher salt
                      
                    
                      
                        06 - 
                        16 ounces marshmallow crème
                      
                    
                      
                        07 - 
                        2 teaspoons vanilla extract
                      
                    
                  
                    → Ganache
                    
                      
                        08 - 
                        1⅓ cups (8 ounces) semisweet chocolate chips
                      
                    
                      
                        09 - 
                        1 cup heavy cream