Heat oven to 450. Meanwhile, add oil, onion, and pepper to large skillet. Sautee on medium-high until vegetables are soft, about 7-10 minutes.
Add beef and Worcestershire sauce, sautéing for an additional 2 to 3 minutes.
Place hoagie rolls on baking sheet. Divide meat mixture evenly among rolls. Top with cheese. Bake until cheese has melted, about 5 minutes. Serve immediately.
Recipe by Mom to Mom Nutrition at https://momtomomnutrition.com/food-and-recipes/roast-beef-hoagies-with-melted-provolone-cheese/