Warm the butter and milk together until butter is mostly melted.
Add sultanas to warm liquid and set aside.
Place all dry ingredients together in a large bowl (or the mixing bowl of your stand mixer).
Whisk dry ingredients together briefly until blended.
Add whisked egg to the warm milk and whisk in
Add wet ingredients into dry. You can use the dough hook on your stand mixer, or mix by hand. If mixing my hand, spend a few minutes kneading the dough on a lightly floured bench until smooth.
If your mixture seems too dry, add a little more milk in small amounts until the consistency is better. You don't want a super stiff dough, nor do you want a sloppy dough. Something in between is good!
Place dough in an oiled bowl and cover. Allow to rise until doubled in size - usually this takes around 1.5 hours, depending on the room temperature.
Remove dough from bowl and knead lightly. Cut into 2 equal portions.
Place in lined bread loaf tins or place rounds on lined trays.
Cover and allow to rise once more, this time for around 30 minutes.
Preheat oven. Fan forced 210 celsius (410 Fahrenheit), regular 220 celsius (428 fahrenheit).
After the second rise, slash the loaves and place in oven for 35 minutes. *Please note, this time can vary between ovens.
Remove from oven and tins and place on a cooling rack.
It is best to allow the loaves to cool completely before slicing - if you can wait that long...