Chinese Simmer Chicken

I got this recipe from my brother in law a long, long time ago. It's his claim to fame.
Chinese Simmer Chicken
2 lbs chicken breast, cut into bite sized pieces
1/3 c brown sugar
1/2 c soy sauce
1/4 c cooking sherry (which I never use)
1/2 c water
2 T ketchup
2 garlic cloves, minced
1/2 bunch of green onions, diced
1/2 t red pepper

Thickening agent:
2 T cornstarch
2 T water
1 t sesame oil

Mix the first 9 ingredients together and let marinate for at least an hour. Place in sauce pan and heat to boil. Reduce to simmer over until chicken is done. Remove chicken from pan once it is cooked. Bring sauce back to a boil. Slowly add the thickening agent mix, constantly stirring until desired thickness.

Serve on top of rice or noodles. Sprinkle with roasted sesame seeds (if you've got them).

I usually make this without the red pepper flakes b/c of my little kiddos. After everyone is served, I add red pepper flakes to both my plate and my husbands to add that little kick.