The finished muffins are fragrant and not overly sweet. The white chocolate adds a nice surprise but you can easily make them without it.
For those of you who might have a hard time finding green tea powder: you can find teabag versions easily at your local supermarket nowadays; cut and empty those into a blender, pulse until fine, and voila you got yourself green tea powder.
I put a teaspoon of matcha teapowder but it didn't result in a vibrant green. - 14 Jun 2014