Pretty Pumpkin 4-Layer Torte
["1 pkg. spice cake mix", "1 (16 oz.) can pumpkin", "2 tsp. soda", "2 eggs", "1/3 c. water", "1 (4 1/2 to 5 oz.) pkg. vanilla pudding", "2 1/2 c. milk", "1/2 c. chopped walnuts", "2 c. whipping cream", "1 Tbsp. butter", "2 Tbsp. milk", "1 3/8 oz. box Milk Duds"]
["Mix cake mix, pumpkin, soda, eggs and water together.", "Bake in 2 circular cake pans at 350\u00b0 for 25 to 30 minutes.", "Cool and split each half to make 4 layers."]
["spice cake", "pumpkin", "soda", "eggs", "water", "vanilla pudding", "milk", "walnuts", "whipping cream", "butter", "milk", "Milk"]