( 18 .5 oz.) box devil's food or German chocolate cake mix
10-oz. diet cola
large egg white
oz. fat free caramel ice cream topping
oz . fat free condensed milk
cup heath bar bits
(8 oz.) container fat free cool whip
Mix cake mix, egg white, and diet soda. Bake as directed in a (9 x 13 inch) pan that has been cooking spray coated and then dusted with flour. During the last few minutes of baking put caramel and condensed milk in a sauce pan and stir on medium low heat until mixed. Take cake out of oven, and poke holes all over the top with a wooden spoon. Pour caramel mixture over cake, filling in the holes. Sprinkle heath bits over the top, saving some for the top. Cool completely. Spread top of cake with container of cool whip and sprinkle with remaining heath bits. Keep chilled in fridge until ready to serve.