Peanut Buster Parfait Cake
["1 chocolate cake mix", "1/2 c. butter, melted", "3 c. milk, divided", "1 egg", "1 1/4 c. peanuts", "3/4 c. peanut butter", "1 1/2 c. powdered sugar", "1 (8 oz.) pkg. cream cheese", "1 (8 oz.) carton Cool Whip", "1 (5 oz.) pkg. vanilla instant pudding and pie filling mix", "1 Hershey chocolate bar, chilled and grated"]
["Preheat oven to 350\u00b0.", "Grease and flour 9 x 13-inch pan; set aside.", "In a large bowl, combine the chocolate cake mix, melted butter, 1/2 cup of the milk, the egg and 3/4 cup of the peanuts; mix at medium speed until well blended.", "Spread the mixture evenly into the prepared pan.", "Bake at 350\u00b0 for 20 to 25 minutes, being careful not to overbake.", "Remove from oven to cool."]
["chocolate cake mix", "butter", "milk", "egg", "peanuts", "peanut butter", "powdered sugar", "cream cheese", "vanilla instant pudding", "chocolate"]