With The Ground Beef, Make 8 Thin Hamburger Patties. Fry In A Skillet For 3 To 4 Minutes On Both Sides Or Until Done. Set Aside. In The Same Pan, Heat The Olive Oil Over Medium Heat. Saute The Green Peppers, Onion, And Mushrooms For 1 Minute. Cover And Let Cook In The Juices For 5 Minutes. Place The Hamburgers On The Buns, Top With Vegetables And An Ounce Of Low Fat Mozzarella Cheese. Drizzle Italian Dressing To Taste.