Prepare Stuffing Mix According To Package Directions. Meanwhile, In A Bowl, Combine Soup And Milk; Set Aside. Spoon About 1/4 Cup Stuffing Onto Each Turkey Slice. Roll Up And Place In A Greased 13-In. X 9-In. X 2-In. Baking Dish. Pour Soup Mixture Over Roll-Ups. Bake, Uncovered, At 350 Degrees F For 20 Minutes. Sprinkle With Onions. Bake 5 Minutes Longer Or Until Heated Through.