Chicken Lo Mein

2 teaspoons instant chicken bouillon granules (or 2 cubes)
2 cups boiling water
8 ounces boneless skinless chicken breasts, cut into long,thin slices
1/4 cup soy sauce
4 teaspoons cornstarch
2 teaspoons sesame oil
3-4 cloves garlic, minced
1/2 teaspoon ground ginger
4 green onions, chopped
1/2 can water chestnut, chopped
2 cups finely shredded cabbage
1 cup thinly sliced celery
1 cup frozen green pea, thawed and drained
1 carrot, shredded
8 ounces thin spaghetti, cooked and drained

Dissolve broth granules in boiling water in small saucepan. Pour 1/2 cup broth mixture into large skillet. Let remaining liquid in saucepan cool. Bring mixture in skillet to boiling. Add chicken and simmer 5 minutes, until no longer pink in center. Remove chicken with slotted spoon to platter. Pour off liquid from skillet.
Stir soy and cornstarch in small bowl until smooth. Stir into remaining cooled broth in saucepan. Heat oil in same skillet over medium-high heat. Add garlic and ginger; cook 30 seconds, stirring. Add all veggies; cook, stirring 2-3 minutes until veggies are crisp-tender. Add chicken and pasta; toss 2 minutes until heated through. Stir cornstarch mixture in saucepan; add to skillet. Cook 2-3 minutes, stirring, until slightly thickened. Top with additional sliced green onion if desired.