Ultimate Philly Cheesesteak Sandwich Ingredients: For the Beef: 1 lb ribeye steak, thinly sliced 2 tbsp olive oil Salt and pepper to taste For the Caramelized Onions: 2 large onions, thinly sliced 2 tbsp butter 1 tbsp olive oil Salt and pepper to taste For the Sandwich: 4 hoagie rolls or French baguettes 8 slices provolone cheese 1 cup shredded mozzarella cheese (optional) 1/2 cup shredded cheddar cheese (optional) Instructions: Prepare the Caramelized Onions: In a large skillet, heat the...