Cut the crust of the bread. Use rolling pin to flatten.
Arrange bread slices into each muffin slot.
In a mixing bowl, add eggs and whip them until it becomes frothy. Then add chopped onion, tomato, spinach, green bell peppers, Cajun seasoning, salt, and black pepper. And mix thoroughly.
Pour egg mixture into each bread cups and pop them into the oven immediately.
And bake it for about 20-25 minutes or until it is done.