This fantastic Korean fusion Philly cheesesteak style bulgogi cheese steak sandwich is packed with flavor and texture. It’s a simple and quick sandwich that takes 15 minutes — no need to marinate the bulgogi beef at all.
To make the sauce, combine all the sauce ingredients in a small bowl and mix well; set aside.
Heat oil in a skillet over medium high heat. Add onion and cook until softened and slightly caramelized. Add beef slices and stir fry together until beef is browned.
Add chopped kimchi and stir-fry 2-3 minutes. Add fresh chili and the sauce. Cook until everything is well heated through.
Cut the rolls in half. Place a piece of lettuce and a serving of bulgogi steak filling on the roll. Top with slices of cheese. The heat of the filling will melt the cheese. Serve immediately.
Note: Toasting your rolls in a griddle before adding the filling makes the sandwich warm and even more tasty.If you don't like kimchi, just leave it out or add strips of bell pepper instead.