Lemon Icebox Cake
["1 lemon cake mix, prepare by directions on box", "8 oz. Cool Whip", "1/2 c. lemon juice", "1 cans sweetened condensed milk (Eagle Brand)", "1 box Swiss cake mix", "4 tsp. cocoa", "1 c. sugar", "1/2 stick butter", "1/4 c. milk"]
["Cook cake according to package directions in 9 x 13 dish. While cake is cooking and nearly done, melt butter over low heat in saucepan.", "Add cocoa, sugar and milk and bring to a boil.", "Boil for 2 minutes, stirring constantly.", "Remove from heat.", "Poke holes all in cake while it is hot and pour heated mixture over cake."]
["lemon cake mix", "lemon juice", "condensed milk", "Swiss cake mix", "cocoa", "sugar", "butter", "milk"]