Pan sear the Steak until browned but still rare, then allow to cool.
Prepare the dressing by stirring together the Mayonnaise, the Garlic Paste, the Green Pepper, and the chopped Pickled Chili. Allow this to rest for at least 30 minutes to blend the flavors.
When ready to continue, dice the steak and stir-fry it in a pan over high-heat until hot, then stir in the Barbecue sauce for the last few moments.
Butter the Roll, pan-grilling to toast, if desired, then spread with the dressing, spoon over the beef, and add the Crispy Onions on top.