Start by thinly slicing the onion and bell pepper. In a large skillet, heat olive oil over medium heat. Add the onion, bell pepper, salt, and pepper, and cook until the veggies are tender and browned, about 6 to 9 minutes.
1 tablespoon olive oil, ½ yellow onion, 1 bell pepper, ½ teaspoon salt, ½ teaspoon pepper
Next, add the sliced steak to the skillet along with garlic powder and Worcestershire sauce. Stir everything together and cook until the steak is just done about 3 to 4 minutes.
1 pound thinly sliced ribeye steak, 1 tablespoons Worcestershire sauce, 1 teaspoon garlic powder
Preheat your oven to 350°F (180°C). Without separating the rolls, slice them horizontally to create a top and bottom half. Place the bottom half on a parchment-lined baking sheet for easy cleanup.
12 Hawaiian rolls
Spread the steak and veggie mixture evenly over the bottom buns, then layer the provolone cheese over the top. Place the top buns back on, and if you like, spread a thin layer of mayonnaise on the underside of the top buns.
6 to 8 slices provolone cheese, 4 tablespoons mayonnaise
In a microwave-safe bowl, melt the butter and stir in chopped parsley. Brush this mixture over the tops of the buns.
4 tablespoons butter, 2 tablespoons chopped parsley
Bake for 15 minutes or until the tops are golden and the cheese is melted. Serve right away and enjoy!