Prep the Steak: Freeze the steak for 30 minutes for easier slicing, then thinly slice it against the grain.
Sauté Veggies: Heat olive oil in a skillet over medium heat. Add onions and bell peppers. Cook until soft and slightly caramelized (about 5–7 minutes).
Cook the Steak: Push veggies to the side and add the sliced steak. Season with salt and pepper. Cook until browned (about 4–5 minutes).
Melt the Cheese: Reduce heat, layer provolone slices over the steak, cover for 1–2 minutes until melted.
Assemble: Toast hoagie rolls lightly if desired. Fill each roll with the steak and veggie mixture.
Serve Hot and enjoy with chips or a side salad.