Cut kielbasa into bite size pieces and put in a large saute pan. Cook on high, adding the remaining ingregients except for the cornstarch. Mix well making sure there are no lumps of ingredients.
Bring to a boil for about 10 minutes and then add the cornstarch (dissolved in water). Bring back to a boil for a few minutes more until sauce thickens. Serve or refridgerate and reheat in a sauce pan or microwave (warning: sauce will thin out a little over night).