Pound meat slices, cut-sides up, with meat mallet to 1/2-inch thickness. Add to large nonstick skillet sprayed with cooking spray. Cook on medium-high heat 3 minute on each side or until browned on both sides. Reduce heat to low.
COMBINE dressing and mustard; pour over meat. Continue cooking 3 minute on each side or until meat is cooked through and sauce is thickened.
Meanwhile, prepare stuffing as directed on package, but reduce butter or margarine to 1 tablespoons and add cranberries to the water along with the stuffing mix.
SPOON stuffing onto serving plates. Add meat; drizzle with sauce.