Cut bread into cubes. (Next time I would cut crusts off first, as they made it a bit dry)
Mix egg and milk together...
Add cheese, salt & pepper to taste...
Put 1/2 of bread cubes in mug.
Add a bit of bacon bits, spinach and chopped olives.
Make a second layer with the last of bread cubes, more bacon bits, spinach, and chopped olives.
Pour egg mixture over bread.
Cook in microwave on high for 1 1/2 minutes.
Careful, it's hot!