Note:
In a large saucepan or Dutch oven, add chicken breasts, celery, carrots, onion, bell pepper, garlic salt, and sugar. Add stock or water, bring to a boil then reduce to a gentle simmer. Partially cover and simmer until chicken is cooked through and vegetables are soft but still have some texture, 15 minutes or so. Remove the chicken, cut or shred, and set aside.
At a low simmer, add the canned/jarred vegetables of choice and the soy sauce. Heat through.
In the meantime, place the cornstarch into a small cup and while stirring, add in the water to form a slurry. Add slurry to the pot, gently stirring until the sauce has thickened. (See note.) Add the chicken back to the pot to heat through. Taste and just the amount of Soy Sauce if needed.
Serve over rice garnished with Crispy Chow Mein Noodles.
Notes: