Put all your ingredients (apart from your codettes) in a mixer. Mix them together.
Add your codettes.
Mix them well.
Butter your muffin cases.
Fill your muffin cases with all the batter.
Cook your muffins in a preheated oven (180ºC) for 15-20 minutes. When they're cool, take them off the muffin cases. Sprinkle on some icing sugar and serve :)