This recipe for Philly cheesesteak sandwiches is one of those Crock Pot meals you will want to make again and again, because you get that authentic Philly cheese steak taste, yet none of the hassle. It is a cinch to prepare, because all of the work is done in the Crock Pot. Just dump everything in, and a few hours later, dinner is ready! Even better: You can buy a leaner cut of meat and let the Crock Pot cooking tenderize it. Look for thinly-sliced round steak in the meat section of your local grocery store. If you can't find pre-sliced round steak, ask the butcher to slice it for you (after all, why do any more work than you need to?). Although this Crock Pot meal tastes every bit as delicious as an authentic Philly cheese steak, it is relatively low in fat (thanks to the reduced fat cheese) and high in vitamins (thanks to the peppers and onions). If you like, substitute red peppers for the green peppers. They are packed with vitamin C, as well.