I small can of leche lechera (sweetened condensed canned milk)
1 medium can of evaporated milk (Carnation)
200 grams (about 1/2 lb) of crumbly cheese: "queso ranchero" or "queso fresca"
Place all of the above in the blender, and blend for about 1 minute
2-3 TB sugar in a hot frying pan.
STIR CONSTANTLY. This will just take a minute or two.
When the sugar has melted, pour it into a small baking pan and quickly spread the carmel to cover the bottom of the pan (if it hardens before you can spread it,that's ok too.).
Then pour the flan mixture into the Pan.
Cover the pan with tinfoil.
Place this pan in another pan of water.
Place the nesting pans into a cold oven. Turn to 200 degrees Centigrade (just under 400 degrees Fahrenheit). Bake for 1 hour.