Prepare the fries

• Cut the potatoes into fries and rinse well in cold water.
• Dry the fries thoroughly with a clean towel.

Fry the fries

• Heat the frying oil in a stockpot to about 160 °C.
• Fry the potatoes a first time until soft but pale, then drain.
• Raise the oil to about 190 °C and fry again until golden and crispy.
• Drain on paper and season with salt.

Sear the steak

• Heat the vegetable oil in a frying pan over high heat.
• Add the sliced steak and sear until browned.
• Season with salt and black pepper.

Cook the vegetables

• Add the onion and green bell pepper to the pan.
• Cook with the steak until softened and lightly caramelized.

Melt the cheese

• Divide the steak and vegetable mixture into portions in the pan.
• Top each portion with provolone slices and let melt.

Assemble and serve

• Fill the toasted hoagie rolls with the cheesy steak mixture.
• Serve hot with the homemade fries.