Philly Cheesesteak Cheesy Bread

Ingredients:

8 ounces thinly sliced ​​rib eye

1/2 teaspoon kosher salt divided

1/4 coarsely ground black pepper divided

1 tablespoon rapeseed oil

1 tablespoon Worcestershire sauce

2 tablespoons of butter

1 sliced ​​green pepper

1 sliced ​​yellow onion

4 ounces sliced ​​mushrooms

1 loaf of French bread, cut in half lengthwise