leftover Thaw and Reserve with Stock

1 pkg. ORIGINAL Uncle Ben's Long Grain and Wild Rice Mix, NOT quick and NOT Brown and wild rice 1/2 cup Dry Sherry Chicken Stock 1 cup Sour Cream 1 can Water Chestnuts, Chopped, OPTIONAL 1 cup Mushrooms, or 1 Can Stems and Pieces 6 oz. Cheddar, Shredded OPTIONAL DEEM'S CHICKEN CASSEROLE Cook Rice mix per package instructions, SUBBING 1/2 C. Sherry for 1/2 C. of the liquid, and Chicken Stock for the rest... Add chicken and stir to cool rice a bit. Add Sour Cream, Mushrooms, and Water Chestnuts. Stir. Spray cassarole and transfer mix. Top with cheese. Bake as above till bubbly.