Place sugar in a 5X9 inch loaf pan over medium heat and cook, stirring occasionally until sugar has dissolved and caramel in color. Remove pan from heat and set aside to cool for 5 minutes.
Meanwhile, in a blender, combine and process eggs, cream cheese, evaporated milk, sweetened condensed milk and vanilla until smooth.
Pour mixture into prepared pan. Place it in another, larger, shallow baking pan and set it in the middle shelf of the oven. Pour enough hot water in the bigger pan to come halfway up the sides of the loaf pan.
Bake for l hour and 20 minutes or until top is set. Allow to cool to room temperature before refrigerating for several hours or overnight. Run a clean knife around the edge before inverting onto a serving plate.