Preheat the oven to 350ºF. Line a 9-inch loaf pan with parchment paper then grease it with cooking spray.
In the bowl of a stand mixer fitted with the paddle attachment, beat together the egg, sugar, olive oil and orange juice.
Beat in the baking powder, baking soda and salt, then add the flour in two increments and continue mixing just until combined.
Use a spatula to carefully fold in the blueberries.
Pour the mixture into the prepared loaf pan then sprinkle sanding sugar on top (optional). Bake the loaf for 1 hour, or until a toothpick inserted comes out clean.
Cool the bread in the pan for 10 minutes, then remove it from the pan and allow it to continue cooling on a rack before slicing and serving.