Chicken Mole with cornstarch

2 1/2-3 lbs chicken pieces 2 tablespoons butter 1/4 cup onion , finely chopped 1/4 cup green pepper , finely chopped 1 garlic clove , minced 1 (7 1/2 ounce)[...]

2 cups white meat chicken , cooked, torn into chunks 2 (14 ounce) cans chicken stock (low sodium preferred) 3 tablespoons mole (Dona Maria brand preferred) 1[...]