n n n Mix chocolate cake mix, eggs, water, oil and vanilla together in a bowl until totally blended, then pour into the slow cooker.n n n n Stir in white chocolate and milk chocolate chips into the batter.n n n n Drizzle half the caramel sauce on the batter.n n n n In a separate bowl, mix the chocolate pudding mix and two cups of milk together, then pour this mixture on top of the cake mix inside the slow cooker.n n n n Top with the remaining caramel sauce.n n n n Put the lid on the slow cooker and cook for two hours on high.n nn