Whisk together egg whites, eggs, water, salt and pepper in medium bowl. Spray nonstick spray in skillet and heat over medium heat. Add egg mixture and cook for 2 minutes or until eggs begin to set on the bottom. Gently lift edge of omelet to allow uncooked portion of eggs to flow to underneath. Cook until the center is set. Sprinkle cheese, tomato and basil over half of omelet. Fold omelet over the filling. Let cook until cheese melts. (you might even turn the heat down a little bit). Cut in half and serve. Makes 2 servings.