Preheat the oven to 180°C (356°F).
Beat the eggs and mix well with salt, milk, and erythritol.
Add low-fat milk and yogurt together and combine.
Place low-calorie pie sheets made with milk into the pan in the shape of a cup.
Pour the egg mixture into the crust.
Bake in the oven at 180°C for 20 minutes.
Cool before serving.