Add 1 tablespoon of oil in a pan and sear the chicken fillets.
Place the chicken fillets in a baking dish and pour over the korma sauce, stir to coat the chicken. Add water into the jar, shake and add it to the sauce.
Scatter over sliced onions, diced green peppers, and cranberries. Cover and bake for 60-75 minutes or until the chicken is tender and cooked through.