1. Heat oil in large nonstick skillet over medium heat until hot. Add eggs and vegetables; cook 1 to 3 minutes or until eggs are scrambled and just set, stirring occasionally.
2. Stir in beef Steak; cook and stir 1 minute or until beef is just heated through.
3. Evenly divide beef mixture between tortillas; top evenly with cheese, if desired. Serve with Toppings, if desired.