I do the caramel directly in the cake pan ,place sugar inside add water and bring to boil until look caramel color ,take from heat and with the help of a spoon add caramel all over the pan ,set aside and start doing the pudding

beat the milk ,eggs and the condense milk ,place the pudding in the caramelized pan

do the instant cake following the package instructions ,place on top of the pudding (just like that don't fill scared magic will happen when you bake it )