Heat olive oil in a skillet over medium heat. Add onions and bell peppers, cooking until softened.

Add mushrooms and cook until they are tender.

Push the vegetables to the side and add the sliced steak to the skillet. Cook until browned, seasoning with salt and pepper.

Combine the steak with the vegetables and distribute evenly.

Place provolone cheese on top, allowing it to melt.

Split the hoagie rolls and load them with the steak and cheese mixture.

Serve hot.