The sliced cheese is what occurs when you integrate a cheeseburger and a Philly cheesesteak in the most amazing way. While cooking, onions are integrated into sliced ground beef that's been browned like a hamburger for additional taste, then pieces of cheese are melted on top. The outcome is the ultimate sandwich and any street food enthusiast's dream. This premier dish can be easily prepped ahead of time, so you can prepare this dish on the stovetop…