Peel an apple.
Optional: Grease the mug/bowl with oil before adding the ingredients.
In a mug or a small bowl, mix the egg with..
..the grated apple, oatmeal, baking powder and sweetener.
Whisk. Cook in the microwave for 1-2 minutes on the highest effect.
Turn upside down and serve!
I served mine with quark and apple sauce. Other toppings could be unsweetened peanut butter, yogurt, nuts etc.
Enjoy your breakfast!