Crock pot honey sesame chicken

2 1/2 lbs. chicken
salt and pepper
1 cup honey
1/2 cup soy sauce
4 Tbsp diced onion
4 Tbsp ketchup
2 Tbsp canola oil
2 clove garlic, minced
1/2 tsp red pepper flakes (optional)
4 tsp cornstarch dissolved in 6 Tbsp water
Sesame seeds

Season both sides of chicken lightly with salt and pepper, put into crock pot.  In a small bowl, combine honey, soy sauce, onion, ketchup, oil, garlic and pepper flakes.  Pour over chicken.  Cook on low for 3 hours or just until chicken is cooked through (do not over cook, I have accidentally burnt it a couple of times in the crock pot, it really only needs a couple of hours).
Remove chicken from crock pot, leave sauce.  Dissolve cornstarch in water and pour into crock pot.  Stir to combine with sauce.  Replace lid and cook sauce for a few more minutes until slightly thickened.  Cut chicken into bite size pieces then return to pot and toss before serving.  Sprinkle with sesame seeds and serve over rice.