Ingredients:
3 chicken fillets.
Place in a large bowl.
Salt and pepper.
4 eggs.
Salt and pepper.
5 tablespoons sour cream.
Grate 100 g mozzarella cheese.
Pour in the egg mixture.
Oil.
Place in a baking dish.
1 onion.
4 tomatoes.
Bake at 180°C/356°F for 30 minutes.