Preheat oven to 175°C Blend the pineapple in a blender. Set aside. Mix oats, flakes and milk in a bowl and leave it for 10 minutes. Then add the carrots, the pineapple, the egg whites, the sweetener and the cinnamon. Pour into an 8 inch round cake pan and bake for 1 hour.
You can make topping with 150 gr. cream cheese + 1 tbsp lemon jiuce + 1 tbsp sweetener.