This recipe for Philly Cheesesteak Sloppy Joes includes lots of cheesy goodness – but you can certainly add more!  There are a few ways to add cheese to this recipe: mix cheese directly into the filling, place cheese directly on top of the meat to melt while still in the skillet, place cheese on top of the filling on the buns to melt in the oven or place cheese on top of the meat piled on the bun while it's hot.