I found these muffins in a book by the Australian Women's Weekly and made them for my Dad's birthday this year. The original recipe called for blackberries but I used blueberries instead. I'm sure they will be yummy with other berries as well. I also cut back on the sugar and butter used in the original and they still were very rich. Yum! Note: the cup measurements are based on the use of an Australian cup of 250 ml.