Sift the plain flour, cinnamon, nutmeg, sugar and salt in a large bowl. Using your fingers, rub the butter through the dry ingredients mixture until it resembles fine breadcrumbs. Add the dried yeast to the warm milk and whisk together. Leave in a warm spot until frothy then add to the dry mixture.
Add the egg and dried fruit (if using) to the bowl and mix to combine. Knead the dough together and then cover and set aside to rise in a warm spot for 30 minutes. Divide the mixture into 12 equal-sized balls and placed into a baking tray.
Pipe crosses over the top using a flour and water paste (see tips below). Leave the buns to prove again for 15 minutes. Bake in the oven for 15 minutes at 200 degrees C.