01 -
Slice mushrooms, bell pepper, and onion into thin strips.
02 -
Heat 1 tablespoon butter and 1 tablespoon oil in a skillet over medium heat. Cook mushrooms for 2 to 3 minutes until tender, then transfer out of the pan.
03 -
Add the sliced onion and bell pepper to the skillet. Cook for 3 minutes until slightly softened. Remove from the pan.
04 -
Add remaining butter and oil to the skillet and increase heat to medium-high. Cook the shaved beef steak until browned and cooked through.
05 -
Return the cooked vegetables to the skillet with the beef. Stir in salt, garlic powder, black pepper, and Worcestershire sauce. Cook for 1 to 2 minutes to blend flavors.
06 -
Place provolone slices evenly over the beef and vegetable mixture. Turn off the heat and cover the skillet to allow the cheese to melt.
07 -
Preheat oven to 175°C. Spread 2 tablespoons of butter on the hoagie rolls and toast in the oven until golden and crisp.
08 -
Fill each toasted roll with the beef, vegetable, and melted cheese mixture. Serve immediately while hot.