This has been my go to receipe, feeling and low in fat, granted my flan doesn't come out looking like the picture.
4 egg whites
2 Table Spoons of honey from stevia or agave
1/2 teaspoon of vanilla
1/2 teaspoon of lemon peel zest.
Heat oven to 350 degrees
Beat the egg whites, add 1 tablespoon of honey or stevia, vanilla and lemon zest
Put the rest of the honey in the pan and add the prepared. Cooking in "Bano Maria" Style(in a container filled with water, the flan container is place inside the container to cook in)
Cook for 30 minutes, cool, unmold cold