→ Cookie Base
                    
                      
                        01 - 
                        2 cups all-purpose flour, spooned and leveled
                      
                    
                      
                        02 - 
                        2 tablespoons cocoa powder, preferably Dutch-process
                      
                    
                      
                        03 - 
                        2 tablespoons cornstarch
                      
                    
                      
                        04 - 
                        1 teaspoon baking soda, fresh
                      
                    
                      
                        05 - 
                        1/2 teaspoon fine salt
                      
                    
                      
                        06 - 
                        1/2 cup unsalted butter, softened to room temperature
                      
                    
                      
                        07 - 
                        1/2 cup granulated white sugar
                      
                    
                      
                        08 - 
                        1/2 cup packed brown sugar
                      
                    
                      
                        09 - 
                        1 large egg, room temperature
                      
                    
                      
                        10 - 
                        1 teaspoon pure vanilla extract
                      
                    
                      
                        11 - 
                        1 teaspoon white vinegar or apple cider vinegar
                      
                    
                      
                        12 - 
                        1-2 tablespoons red food coloring, gel preferred
                      
                    
                  
                    → Cream Cheese Filling
                    
                      
                        13 - 
                        4 oz cream cheese, full-fat, room temperature
                      
                    
                      
                        14 - 
                        2 tablespoons unsalted butter, softened
                      
                    
                      
                        15 - 
                        2 tablespoons vegetable shortening
                      
                    
                      
                        16 - 
                        2 cups powdered sugar, sifted
                      
                    
                      
                        17 - 
                        1-2 tablespoons heavy cream, as needed
                      
                    
                      
                        18 - 
                        Pinch of salt