Preheat the oven to 200/180 fan/400/gas 6
Line a muffin tray with paper or silicone muffin cases.
Mix the dry ingredients together in a large mixing bowl
Mix the wet ingredients together well in a large jug..
Pour the wet ingredients into the dry, and fold together until all the dry ingredients have disappeared. It will appear a little lumpy from the banana, that's OK :)
Divide the batter between the muffin cases. I like to use a soup spoon for this, it's the perfect size.
Pop in the oven and bake for 20- 25 minutes.
They are ready when the tops of the muffins bounce back up when pressed, or a a skewer comes out of the centre of a muffin clean.
Remove from the muffin tray and let cool on a wire cooling rack.