Pre-heat your oven to 350°F and line a loaf pan with parchment paper.
Mix the dry ingredients in a bowl.
Add the wet ingredients and give it a quick mix just until combined - don't overmix the batter.
Pour the batter in the prepared pan and bake for 30-35 minutes or until well risen and it springs back if pressed gently on its surface.
Remove from the oven and let it cool in the pan - as it cools it will slightly deflate.
Notes
These quantities are enough for a small loaf cake - 20x10cm - for bigger pans make 1½, up to 2 portions of batter and increase the baking time accordingly.