1. In a bowl, place the eggs, yogurt, cornstarch and sweetener to taste.
2. Blend well.
3. Transfer the mixture to a baking dish.
4. Peel an apple into slices and add it to the mixture.
5. Bake in a preheated oven at 350ºF for 45 minutes.
6. Leave to cool and add 0% caramel or jam (optional) on the surface.