Oh my goodness...If I owned a diner this would be on the menu. A burger fitting on the hoagie roll, with onions sauted in bacon, provolone cheese melted and a pile of crisp bacon on the top....Fit for a bacon LOVER!!
In large bowl, combine hamburger, onions, garlic, egg, bread crumbs, seasoning and salt & pepper; mix well. Shape burgers to fit in hoagie roll. See picture..In large fry pan cook burgers. Remove from pan & set aside.
In same pan add onions and 4 slices of bacon. Add ground pepper. Cook till brown and tender.
Cook bacon till crisp. I do mine in the oven on 425F for 20 minutes or until crisp; remove and drain on paper towels.
Assemble the hamburger with 2 slice of provolone cheese. Place in the 425F oven to melt the cheese and brown the edges of the bread. Remove from oven and spoon on onions and then pile bacon on top.