Preheat oven to 400
Place ribeye in freezer about 30-40 min prior to cooking. Then remove and thinly slice against the grain.
Prep veggies. Dice onion, pepper, and mushrooms into medium size pieces.
In a hot skillet melt 2T butter. Once the butter melts add salt, pepper, and seasoning salt
Add in your steak and cook through. Remove steak to a plate, leaving the juices in the pan.
Add onion, mushrooms, pepper, and 1T butter to the pan with the remaining steak juice. Cook until tender about 10-15 min.
In the last 5 minutes of your cooking pop the hoagie buns (whole) into the oven.
If you are going to add jalapenos to all or half of the veggies this is the time. For even more heat add some of the pickling juices.
Add your meat to the pan and mix together.
Place cheese over the mixture, and cover to steam.
Scoop mixture out into hoagie rolls.
Wrap the sandwich in foil for 5-10 minutes. This will soften the sandwich slightly, yet keep that crispy shell from the oven.