You can use any steak of choice, even leftover steak, or ground beef for this recipe. I used top round because it is one of the more common cuts used for cheesesteaks. If using leftover steak, simply add to the bell pepper and onion to heat and set aside as it is already cooked. Season as needed based on the existing steak seasoning.
Learn how to make your own potato skin shells here! They can be made in advance and stored in the refrigerator. The longer baking time is to account for making the potato skin shells themselves if you have not done so already.
If you use extra cheese on top, or put cheese in the bottom, you will need more than 4 oz.