In large pot, put the amount of water suggested on the two boxes of stuffing mix. Add onions and butter. Bring to boil. Lower heat and Add cream cheese and stir until melted. Add chicken soup and milk. Stir until well blended. Add stuffing mix and stir. Add zuchini and stir together. Pour into a greased lasagna pan (bigger than a 9x13). Bake in preheated 350 degree oven for 50 minutes, covered.