Directions 1. Cut beef into strips. 2. Mix Splenda, oil, soy sauce, green peppers, black pepper, onions and garlic in a non-metal bowl; stir in the beef until well coated. Marinate for at least 30 minutes. 3. Drain beef from marinade. Coat skillet with nonfat cooking spray and stir in sesame seeds; cook until light brown. Remove from skillet. 4. Add beef to skillet and cook until browned. Sprinkle with sesame seeds and serve.