01 - 
                        2 tablespoons olive oil
                      
                    
                      
                        02 - 
                        1 onion, diced
                      
                    
                      
                        03 - 
                        2 large carrots, diced
                      
                    
                      
                        04 - 
                        2 stalks celery, diced
                      
                    
                      
                        05 - 
                        4 cloves garlic, finely chopped
                      
                    
                      
                        06 - 
                        1 ½ teaspoons black pepper
                      
                    
                      
                        07 - 
                        1 teaspoon salt
                      
                    
                      
                        08 - 
                        ½ teaspoon cayenne pepper
                      
                    
                      
                        09 - 
                        1/2 teaspoon mustard powder
                      
                    
                      
                        10 - 
                        1 pinch nutmeg
                      
                    
                      
                        11 - 
                        6 cups vegetable broth, divided
                      
                    
                      
                        12 - 
                        1/4 cup all-purpose flour
                      
                    
                      
                        13 - 
                        2 cups uncooked pasta shells
                      
                    
                      
                        14 - 
                        1/2 cup heavy cream
                      
                    
                      
                        15 - 
                        1 (8 oz) block cream cheese
                      
                    
                      
                        16 - 
                        3 cups cheddar cheese, shredded
                      
                    
                      
                        17 - 
                        Chives, green onion, or bacon for garnish