HEAT oven to 375ºF.
DRAIN peaches, reserving juice. Add enough hot water to reserved juice to measure 1-1/2 cups; pour into large bowl. Add butter; stir until melted. Stir in stuffing mix and peaches. Let stand 5 min.
SPOON into 13x9-inch pan; top with chops. Mix preserves and mustard; spoon over chops.
BAKE 40 min. or until chops are done (160ºF).