Preheat oven to 350°F (180°C) and line a standard loaf tin with parchment paper. Allow the paper to overhang two sides of the pan.
In a large bowl, use a handheld whisk to combine brown sugar and eggs. Keep whisking until everything turns light and foamy. This will take a minute or two.
Pour in the buttermilk, canola oil and vanilla and keep whisking until everything is smooth. The mixture will start to thicken up a bit at this stage.
Now add in the dry ingredients: flour, baking powder, baking soda, and salt. Whisk everything until combined and all of the lumps are gone. The batter should be smooth.
Add the chopped white chocolate and gently fold into the batter.
Pour the batter into the prepared loaf pan and bake on the centre rack of the oven for 50 minutes. Check to see if the loaf is done. If it needs more time, continue baking for another few minutes. The total baking time usually will not exceed 1 hour.
Let the loaf cool on a cooling rack before frosting or cutting into slices.