Peel and slice yams in 1/2 inch slices. Place yams in nonstick casserole dish. Bake at 350º for 30 minutes until soft. Meanwhile, combine butter, Teriyaki Baste and Glaze, cinnamon and nutmeg in a saucepan and heat until butter melts. Thoroughly stir glaze mixture and pour over yams. Return yams to oven, cook for another 10 minutes.