2. Combine next 6 ingredients; pour over turkey. Cover; cook on low-heat setting for 9 hours.
3. Remove roast; keep warm. Discard bay leaf. Skim excess fat from cooking liquid; measure 1-1/3 cups cooking liquid into a saucepan. Blend cream slowly into cornstarch; stir into liquid. Cook and stir until thickened and bubbly. Season to taste.
4. Slice roast. Spoon some sauce over; pass remaining. Garnish with parsley, if desired.