Clean and pat the steak dry. Cut and discard the fat. Then, thinly slice the steak.
Set cooker to saute-high. Add oil imediately let heat for approx. 1 minute.
Add sliced bell pepper and onions. Saute for 1 minute or until the onion is translucent.
Add sliced beef, and Italian seasoning seasoning. Add salt and pepper to taste. Press cancel.
Place the lid on. Pressure cook on high for 6 minutes and natural release for 10 minutes. Follow the manufacture for a quick release. Remove the lid.
Place the cooked meat, onion and bell pepper on a hoagie bun(s). Place 2-3 sliced provolone cheese (or tear them into pieces) on each hoagie bun(s).
Transfer the philly cheesesteak to the oven. Broil on high for 3-5 minutes or until the cheese has melted and is a little bubbly/brown.