→ Steak
                    
                      
                        01 - 
                        2 pounds beef sirloin, trimmed
                      
                    
                      
                        02 - 
                        2 teaspoons kosher salt
                      
                    
                      
                        03 - 
                        2 teaspoons black pepper
                      
                    
                      
                        04 - 
                        3 tablespoons unsalted butter, divided
                      
                    
                  
                    → Toppings
                    
                      
                        05 - 
                        1 large yellow onion, thinly sliced
                      
                    
                      
                        06 - 
                        1 medium jalapeño pepper, sliced
                      
                    
                      
                        07 - 
                        1 cup (113g) sharp cheddar cheese, shredded
                      
                    
                  
                    → Assembly
                    
                      
                        08 - 
                        1 package (12-count) brioche slider rolls
                      
                    
                      
                        09 - 
                        1 recipe cowboy butter, melted, divided