The flan can be baked in a 9-inch metallic pie dish or individual ramekins (about 8 of them)
In a medium saucepan over medium-low heat, melt sugar until liquefied and golden in color.
Carefully pour hot syrup into the baking pan or ramekins, if you use, turning each mold to coat the bottom and sides evenly. Set aside.
In a large bowl, beat eggs. Beat in condensed milk, evaporated milk, and vanilla until smooth. Add the cheese and keep mixing until smooth. It can also be done in a blender. Pour the egg mixture into the baking dish or split the mixture between the ramekins.
Cover with aluminum foil and place the baking dish or each ramekin into a large baking pan. Pour enough hot water into the baking pan to come halfway up the sides of the ramekins.
Bake until centers of flans are gently set, about 40 minutes.
Transfer flans to rack and cool. Chill until cold, about 2 hours. Cover and chill overnight in the refrigerator.
To serve, run a small sharp knife around the flan to loosen.
Turn over onto a plate. Shake gently to release flan.
Carefully lift off ramekin allowing caramel syrup to run over flan.