Chicken Chow Mein

I got this recipe from my wonderful mother-in-law and it's oh so delicious and can be made in about 30 minutes.I like it with just chow mein noodles, but it goes well with rice too.

Serving size: 2-3 people

Chicken Chow Mein
1 C. onion, diced
1 C. bean sprouts, around 1# Pkg
1-2 TBSP olive oil
1-2 C. celery, chopped/sliced thin on an angle
1/2 C.+ carrots, broccoli, mushrooms chopped optional (add any veggies you like)
1 C. water
1/2 tsp salt
1/2 C.+ chopped chicken or turkey

Sauce:
2 Tbsp corn starch
4 tsp sugar
2 Tbsp cold water
2 Tbsp soy sauce

You can cook all of this in one large non-stick fry pan or wok pan.
Saute chicken in 1/2 cube margarine until cooked. Remove to be added
later.
Saute onion and rinsed bean sprouts in the rest of the margarine until
browned/translucent.
Add celery and other vegies to onion mix, add water and salt.
Add chicken back on top. Cover and bring to a simmer.  Simmer 2 minutes.
Make sauce mix during the simmer time. Mix in order of list, one at a
time.
For thinner sauce, cute the sauce recipe in half.
Stir in sauce mix to thicken. Heat until the sauce is gravy-like.
Serve over rice or hard chinese noodles or ramen type noodles.