Preheat the oven to 200 degrees celsius or 400 degrees fahrenheit
Make sure to coat the inside of the bread tin well with oil
Place all the dry ingredients in a large bowl and mix well
Whisk the egg, add to the oil, treacle and the buttermilk
Make a well in the centre of the dry ingredients and pour in the wet ingredients
Mix well, adding more buttermilk if necessary (mixture should be soft and slightly sloppy)
Pour into oiled tin and if you wish pop some seeds on top such as sesame, sunflower or mixed seed like I have here
Bake for about an hour or until the bread is nice and crusty and sounds hollow when tapped
Leave to cool on a wire rack before cutting