This Philly Cheesesteak Dip is SINFULLY delicious. This easy dip is packed with crispy steak, tangy provolone cheese, mozzarella, and gooey white American cheese. It's studded with green peppers, mushrooms, and a creamy sauce, you can't resist. Philly Cheesesteak Dip I wasn’t going to share this with you today. Because I’m trying to be healthy.