What You Need:

2 T catsup
1 C water
1/2 C white vinegar
1 T soy sauce
1 C brown sugar, firmly packed
1 1/2 lb chicken breasts, cubed
2 T corn starch
2 T cold water

How to Make It:

Pour the catsup into the crock pot. 
Add the water, vinegar and soy sauce.
Stir well to combine.
Add the brown sugar and stir until most of the sugar lumps are dissolved.
Place the chicken in the mixture and stir to cover.
Cover and cook on low 8 hours.
Place the corn starch in a small mixing bowl.
Slowly add the water and stir until smooth.
Add mixture to the crock pot and stir well.
Cover and place temperature on high.
Cook 30 minutes longer being sure to stir about every 10 minutes.
Mixture should be thick when ready to serve.

Tip:

This chicken has a sweet and sour taste and is very delicious served over cooked noodles.