Saute it with onions and peppers and serve as a dish - yes, similar to sandwich but just use it on its own. Also, cook it and use it as a pizza topping.
Make a sauce in separate pan. Equal parts mirin:soy:sake:sugar. Cook until sauce thickens and coats back of spoon. Then cook meat with veggies hot and fast in a wok. Serve over rice.
stroganoff is pretty easy Bahn Mi would be a twist on using it for sandos chip beef on toast if you are nostalgic Stir fry with veg and make a sauce with asian things you have in your fridge and pantry