This recipe guides you through preparing Italian Beef Hoagies by slow-cooking a boneless sirloin tip roast with Italian salad dressing mix and mild pepper rings. The result is succulent, flavorful beef served on hoagie buns, perfect for feeding a crowd with minimal active effort.
For exceptionally tender beef, slice it thinly against the grain after cooking. A slow cooker is ideal for the extended cooking time (over 8 hours) to allow the sirloin to become fall-apart tender and absorb the flavors fully. To enhance the sandwich, lightly toast the hoagie buns before filling and consider adding a spoonful of hot giardiniera for an authentic Chicago-style kick. Don't discard the cooking liquid; it's essential for dipping the finished sandwiches, known as 'au jus'.