I found pretty much the same recipe circulating on the web and most link back to Pioneer Woman. I've made this several times and love it, the only "problem" is there is only 2 of us so we end up eating it for about 4 days b/c it yields so much (I have to think of more spin off recipes like putting it over rice etc.) The peppers give it a nice kick but aren't too spicy, I usually use only about 1/4 of the jar of whole peppers and some liquid, as my husband isn't a fan of spice.
The only 2 things I do differently from this recipe are add sliced onions, and most importantly butter and toast the hoagie rolls before adding the beef and cheese. I haven't served this with au jus yet but I think I will tonight.