These Philly Cheesesteak Stuffed Peppers have all the delicious flavors of a loaded Philly Cheesesteak sandwich, but in a low carb stuffed pepper variation. Tender roast beef, melty provolone cheese, smothered with sautéed mushrooms, onions and garlic. It's a match made in heaven. With only 6 main ingredients and less than 30 minutes of hands on time, this is the perfect quick and easy weeknight dinner.